The term that refers to an agent that decreases urine production is "antidiuretic". The correct option is E.
Antidiuretic agents are substances that prevent or reduce the excretion of urine from the body. They work by reducing the amount of water that is filtered and excreted by the kidneys. This can be useful in conditions where excessive urine production can be harmful, such as in certain types of kidney disease, heart failure, or diabetes insipidus. In contrast, prostaglandins are substances that promote urine production by increasing blood flow to the kidneys and increasing the permeability of the kidney tubules. Anoxic and anemic refer to conditions related to low oxygen levels and low red blood cell count, respectively, and are not directly related to urine production. Antibiotics are medications used to treat bacterial infections and do not have a direct effect on urine production.
Therefore, the correct option is E.
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The complete question is:
Which of the following words refers to an agent that decreases urine production?
A. Anoxic
B. Anemic
C. Antibiotic
D. Prostaglandin
E. Antidiuretic
a single layer of irregulary shaped cells are known as the?
it might be cell membrane
what are some discoveries of asteroid mining
Asteroid mining, although still in its early stages, holds the potential for significant discoveries and advancements. While no major asteroid mining operations have taken place yet, there have been several notable discoveries and findings related to this field:
Resource Potential: Studies have revealed that asteroids contain valuable resources such as rare metals (e.g., platinum, gold), water, and other volatile compounds.
These resources, if successfully extracted, could provide a sustainable supply for various industries, including space exploration.
Water Extraction: Some asteroids are believed to harbor significant amounts of water ice. Water can be used for life support systems, fuel production (hydrogen and oxygen), and radiation shielding.
Successful extraction and utilization of water from asteroids could revolutionize space missions and enable long-duration exploration.
Scientific Insights: Studying asteroids up close through mining missions provides invaluable scientific data about the early solar system.
Asteroids are considered remnants from the formation of planets and contain clues about the composition, evolution, and history of our solar system.
Technological Innovations: The pursuit of asteroid mining has driven advancements in spacecraft design, robotic systems, resource extraction techniques, and other related technologies.
These innovations have broader applications beyond asteroid mining, benefiting space exploration and terrestrial industries.
While asteroid mining is still a developing field, these discoveries highlight its potential to revolutionize resource utilization in space and contribute to our understanding of the universe.
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Equal and opposite forces that act on the same object are called what forces?
2. Consider all the "energy" that was "lost" in the food chain during the activity.
In an actual ecosystem how might this energy be used? Explain.
Answer:
Energy that is not used in an ecosystem is eventually lost as heat. Energy and nutrients are passed around through the food chain, when one organism eats another organism. Any energy remaining in a dead organism is consumed by decomposers.
When scientists carefully measure the lichens and agree on their thickness and how often they appear which parts of the scientific cycle are scientists using
Answer:
This question is incomplete; the complete question including the options are as follows:
During a study of lichens and air quality in part of China, scientists measure the thickness of lichens and estimate how many rocks and trees are covered with lichens in one town. The scientists are following the scientific cycle of observing while using a systematic process, establishing facts, explaining facts, and then returning to the systematic process to collect more facts.
When scientists carefully measure the lichens and agree on their average thickness and how often they appear, which parts of the scientific cycle are the scientists using?
A- process and facts, because they are using a systematic method to measure and then record data
B- process and facts, because they are observing lichens and air quality and describing why they are related
C- explanation and process, because they are using a systematic method to measure and then record data
D- explanation and process, because they are observing lichens and air quality and describing why they are related
The answer is A. process and facts, because they are using a systematic method to measure and then record data
Explanation:
Scientific experiments follow a series of well coordinated steps. These steps range from making observations to analyzing data. In this experiment, which involves scientists conducting a study of lichens and air quality in a part of China, a scientific cycle is being followed.
However, the scientists get to a point where they carefully measure the lichens and agree on their average thickness and how often they appear. This point is where the ANALYSIS OF DATA in the experiment occurs. Therefore, the part of the scientific cycle they are using is PROCESS and FACTS, because they are using a systematic method to measure and then record data.
Explain why the null hypothesis Upper H 0 : mu 1 equals mu 2 is equivalent to the null hypothesis Upper H 0 : mu 1 minus mu 2 equals 0. Choose the correct answer below. A. They are equivalent through algebraic manipulation. B. They are equivalent because the null hypothesis, Upper H 0, is always assumed to be true. C. Bydefinition, the null hypothesis is always equal to 0. Therefore, these hypotheses are equivalent. D. The values of mu 1 and mu 2 are equivalent in every population. Therefore, these hypotheses are equivalent.
The null hypothesis Upper H0: μ1 = μ2 is equivalent to the null hypothesis Upper H0: μ1 − μ2 = 0 because they are equivalent through algebraic manipulation (Option A).
A null hypothesis is a hypothesis that is tested for possible rejection under the assumption that it is true. It is generally denoted by H0. A null hypothesis usually states that the two populations under consideration are the same or equal.
Algebraic manipulation is the technique of manipulating algebraic expressions to simplify or prove a mathematical relationship. The null hypothesis Upper H0: μ1 = μ2 can be transformed by subtracting one population mean from the other to get H0: μ1 − μ2 = 0. So the null hypothesis Upper H0: μ1 = μ2 is equivalent to the null hypothesis Upper H0: μ1 − μ2 = 0.
Thus, the correct option is A.
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Which is one factor that contributes to the formation of polar, temperate, and tropical zones?
A.)the angle of the Sun’s rays
B.)the direction of seasonal winds
C.)the presence of prevailing winds
D.)the movement of wind near a mountain
A. the angle of the sun's rays
Answer:
A, angle of the Suns rays
Explanation:
a majority of climates are determined by relative location to the equator, which is the hottest part of the planet.
Which one of the causes of
biodiversity loss, effects all of the
Earth at once, where the others only
effect parts of the Earth at once.
Overharvesting
Habitat alteration
Climate change
Invasive species
Answer:
overharvesting
Explanation:
this is the outcome of cut down trees for personal and industrial use,which as a result causes less trees and homes for birds and gradual decrease of oxygen which the trees produce....hope this helps
In a population of giraffes, some of them have longer necks than others
Answer:
This is due to evolution
Explanation:
The giraffes with longer necks can reach food more easily than the short neck giraffes so as to reach food in higher trees.
6. Students who attend Space Camp in Huntsville, Alabama are given the opportunity to learn about space travel. While
there, they explore distances between objects in space. One camper was asked to compare the distances between objects
in space and Earth. Which statement below is correct?
O The distance from Earth to the Sun is measured in astronomical units (AU).
O The distance from Earth to the Moon and Mars are both measured in light years.
The distance from Earth to the edge of the solar system is measured in kilometers.
O The distance from Earth to the star, Alpha Centauri, is measured in astronomical units (AU).
Thank you so much!
The correct statement is: "The distance from Earth to the Sun is measured in astronomical units (AU)."
An astronomical unit (AU) is a unit of measurement commonly used in astronomy to represent distances within the solar system.
It is defined as the average distance from the Earth to the Sun, which is approximately 93 million miles or 150 million kilometers. Using AU as a unit allows for a more convenient way to express and compare distances between objects within our solar system.
The statement that the distance from Earth to the Moon and Mars are both measured in light years is incorrect.
A light year is a unit of distance used to measure vast distances in space and is defined as the distance that light travels in one year (approximately 5.88 trillion miles or 9.46 trillion kilometers).
The distances between Earth and the Moon, as well as Earth and Mars, are much smaller and are typically measured in terms of thousands or millions of miles or kilometers.
Similarly, the distance from Earth to the edge of the solar system is not measured in kilometers.
The outermost edge of the solar system is typically defined by heliopause, where the influence of the Sun's solar wind diminishes. This distance is often measured in astronomical units or other astronomical measurements.
The distance from Earth to the star Alpha Centauri, which is the closest star system to our solar system, is not measured in astronomical units (AU).
It is typically measured in terms of light years, as the distance is extremely vast (approximately 4.37 light years away from Earth). Therefore, the correct statement is: "The distance from Earth to the Sun is measured in astronomical units (AU)."
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PLEASEE
HELPP
name the reactants in the Following chemical reaction.
1.2 (c) +O2 (g) ——>2 Mg O.
Answer:
the answer is
Explanation:
2Mg+O2====== 2MgO
plz mark as brainlist
Which of the following can lead to cancer?
A. a disruption in the cell cycle
B a cell entering the G0
C. A cell never leaving G0
D. The death of a cell
The option that can lead to cancer is a disruption in the cell cycle (option A).
What causes cancer?Cancer is a disease in which the cells of a tissue undergo uncontrolled (and often rapid) proliferation.
Cell cycle is the life cycle of eukaryotic cells from a quiescent beginning, growth, duplication of DNA followed by mitosis and division. The period of time in the cell cycle when nothing is happening is known as the G0 phase i.e. inactivity.
Cancer is a genetic disorder. It happens when genes that manage cell activity mutate and create abnormal cells that divide and multiply, eventually disrupting how the body works.
Therefore, disruption or alteration in the normal procedure of the cell cycle can lead to cancer.
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Tell some thing about Ch 9 of class 8th
answer
in this chapter you'll learn about how reproduction take place in organisms like animals and humans . you'll also get to know very different way of some uni cellular and multi cellular organisms that how they divide itself and produce a new kind of it's own ; example : the process of budding , binary fission . you'll get to know how internal and external fertilization .
hope you have understand :)
22. An astronaut on the space station tests whether gravity affects the productivity of tomato plants. What
is the independent variable in this experiment?
When conducting an experiment, the independent variable is always the one that produces or causes an effect or reaction on the dependent variable. In the exposed situation, the independent variable is gravity.
--------------------------------------
During an experiment, you need to consider all the variables involved.
Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified to analyze how another variable responds to it. The researcher changes the independent variable to observe its effects on the dependent variable. Usually, the independent variable is represented by the X letter. In the exposed example, gravity is the independent variable, and influences the productivity of tomato plants. Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. Controlled variables are kept constant in the control groups and the experimental groups. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.------------------------
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Tami is doing experiments on three different unknown solids. She understands that treating them in different manners might result in changes to their bonding, and these changes may help her identify unknowns. She treats samples of each solid four different ways: heating them, letting them cool, shining bright light on them, and hitting them once with a hammer. The chart shows what happened to each sample.
Based on how they each acted in the trials, which substance(s) would most likely be metallic?
A and B
B
C
A and C
How does the double helix structure of dna explain how does he molecules can be copied or replicated
Answer:
The double helix structure of DNA allows for the molecules to be copied or replicated through the process of semi-conservative replication.
Explanation:
The double helix structure of DNA consists of two complementary strands of nucleotides, held together by hydrogen bonds between the base pairs. Adenine (A) always pairs with thymine (T) and guanine (G) always pairs with cytosine (C).
The semi-conservative replication, which is the process of DNA replication, takes place by unwinding the double helix and separating the two strands. Each strand acts as a template for the synthesis of a new complementary strand. As a result, two identical copies of the original DNA molecule are formed, each consisting of one original strand and one new strand. This is possible because of the complementary base pairing, where A will only pair with T and G will only pair with C, allowing the strands to be copied with high accuracy. The semi-conservative replication ensures that the genetic information is accurately passed on to the daughter cells.
the volume of blood that leaves the ____________ must be close to the volume that returns.
The volume of blood that leaves the capillary must be close to the volume that returns.
The smallest blood vessel size. In practically every portion of the body, a capillary joins an arteriole (small artery) and a venule (small vein) to create a network of blood vessels. Capillaries are involved in the interchange of fluids and gases between tissues and the blood, and their thin, permeable cell walls allow for this to happen.
Your body is filled with tiny blood channels called capillaries. To the cells in your organs and bodily systems, they deliver blood, nutrients, and oxygen. The tiniest blood veins in your circulatory system are called capillaries.
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Which type of micro-organism makes its own food, like plants do?
a - algae
b - protozoa
c - bacteria
d - yeast
Answer:
algae. I just looked it up. algae are autotrophs meaning they make their own food. I hope this helps!
Answer:
algae is your answer
Explanation:
hope help yiu
In which era were the first dinosaur fossils found?
Answer:
1677
Explanation:
Robert Plot discovered the first dinosaur bone, they thought It was just a human bone but later they found out it was a dinosaur bone.
population of bacteria is growing according to the equation P(t)=1000e0.12t, where P(t) is the population and t is the time in hours. Estimate when the population will reach 5000 . Round to the tenths. Provide your answer below:
The estimated time it will take for the population to reach 5000 bacteria is approximately 13.4 hours.
To estimate when the population will reach 5000 bacteria, we can set up the equation P(t) = 5000 and solve for t.
The given equation for population growth is P(t) = 1000e^(0.12t). To solve for t, we can substitute 5000 for P(t):
5000 = 1000e^(0.12t)
To isolate the exponential term, we can divide both sides of the equation by 1000:
5 = e^(0.12t)
Next, we can take the natural logarithm (ln) of both sides to remove the exponential:
ln(5) = ln(e^(0.12t))
Using the property of logarithms, ln(e^(0.12t)) simplifies to 0.12t:
ln(5) = 0.12t
Now, we can solve for t by dividing both sides by 0.12:
t = ln(5) / 0.12
Using a calculator, we find that ln(5) is approximately 1.6094. Dividing this by 0.12 gives us an approximate value for t:
t ≈ 1.6094 / 0.12 ≈ 13.4117
Rounding to the tenths place, the estimated time it will take for the population to reach 5000 bacteria is approximately 13.4 hours.
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The ABO blood type is controlled by a single locus, called I, and the human population harbors three alleles: la, lb, and i, which are often called A, B, and O, respectively. Each individual, of course (being diploid), only carries two copies of the gene. The relationship between genotype and phenotype is complicated. A is dominant to O, B is also dominant to O, and A and B are codominant, which means that the effect of both can be seen in the heterozygote (phenotype = AB). Possible phenotypes (= "blood types") are thus A (due to genotypes AA and AO, i.e. the same as symbolized by lala and !ai, respectively), B (BB and BO, i.e. Ible and !Bi), AB (AB, i.e. Ials) and O (00, i.e. ii).
Required:
a. Suppose that parents know their phenotypes, but not their genotypes: the father is type AB and the mother is type
b. What are the genotypes of these parents?
c. What are all the possible blood type phenotypes among their children?
a. Suppose that parents know their phenotypes, but not their genotypes: the father is type AB and the mother is type b.The father is type AB, which means that his genotype must be IAIB. This is because AB is the only blood type that results from the codominance of alleles A and B. It is known that he has one allele of A and one allele of B.The mother is type B, so her genotype can be either IBIB or IBi, as B is dominant over O and is due to the presence of allele B. Therefore, she has at least one allele of B, regardless of whether she has another allele of B or an allele of O.b. What are the genotypes of these parents?The genotype of the father is IAIB, while the genotype of the mother is either IBIB or IBi.c. What are all the possible blood type phenotypes among their children?When IAIB and IBi are combined, there is a possibility of four different genotypes for the offspring: IAIB, IAi, IBi, and ii. The probability of each genotype is 1/4, meaning that each genotype has a 25% chance of occurring.The phenotype of the offspring will be determined by their genotype. IA and IB alleles are codominant, while i is recessive. This means that if an individual has IAIB as their genotype, they will have the AB blood type. If an individual has IAi as their genotype, they will have the A blood type. If an individual has IBi as their genotype, they will have the B blood type. Finally, if an individual has ii as their genotype, they will have the O blood type. Therefore, the possible blood types of their children are AB, A, B, and O.
a) The mother has genotype A
b) IAIo and IAIB
c) The possible genotypes of the children are IAIO, IBIO and IAIB
The ABO blood groupThe ABO blood group is a classification system that categorizes human blood into different types based on the presence or absence of certain antigens on the surface of red blood cells. The ABO system is one of the most well-known and widely used blood typing systems.
The ABO blood group consists of four main blood types: A, B, AB, and O. These blood types are determined by the presence or absence of two antigens: antigen A (known as the A antigen) and antigen B (known as the B antigen). Additionally, individuals may have both antigens (A and B) present, which results in blood type AB.
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8. All seeds hove seed or fruit to protect them as they grow. How do seeds grow? 9. The of a plant begins with a seed. 10. The way plants grow, five, and is called their life cycle. 11. Most seeds need water, food, and a little heat to become new plants. 12. A new plant has the same life cycle as its plant. Critical Thinking 13. How ore new plants that grow from seeds like their parent plonts?
Seeds grow with the help of various natural resources like water, oxygen, and sunlight, which help them to sprout and grow roots and develop into new plants. Some seeds grow as soon as they land in the ground, while others need a specific time period to grow.
The life of a plant begins with a seed that contains the necessary resources required for the plant's growth, which includes the embryo, endosperm, and protective seed coat.
The process through which plants grow, reproduce, and die is called their life cycle. It includes different stages like germination, growth, flowering, pollination, fertilization, seed production, and dispersal.
Seeds need water, food, and a little heat to grow into new plants. Water helps seeds to soften and expand, and food helps them to provide the necessary nutrients required for growth. The heat helps seeds to break dormancy and activate enzymes that speed up the germination process.
A new plant has the same life cycle as its parent plant. Plants have a unique life cycle, and every stage of the life cycle is essential for their growth and development. New plants inherit their genetic traits from their parent plants, and their life cycle is the same as that of their parent plant.
New plants that grow from seeds inherit their genetic traits from their parent plants and have the same life cycle as their parent plants. The life cycle of a plant includes the stages of germination, growth, flowering, pollination, fertilization, seed production, and dispersal. Thus, new plants that grow from seeds are like their parent plants.
This system gets rid of waste material
Answer: The excretory system gets rid of waste and excess water.
There are major organs tasked with removing toxic substances from your body organs are kidneys, and lungs
Explanation:
Kidneys: ( One pair of organs in the abdomen). The kidneys act as a filter for the strain of urea and excess salts from the blood as it flows through the body to release them in the urine. The urine flows from the kidneys to the bladder through two thin tubes of muscles known as ureters. The bladder's main function is to store urine. Lungs: (one of the pair of organs in the chest that supplies the body with oxygen, and removes carbon dioxide from the body. Lungs bring fresh air (oxygen) into your body. and release carbon dioxide as well as unwanted materials. In respiration, food is broken down into carbon dioxide and water in the presence of oxygen by released oxygen.What are the links between the environment and Covid-19? Choose all correct answers.
A. with the destruction of ecosystems the natural barriers between host animals is reduced
B. We destroy ecosytems creating channels for viruses to pass to humans
C. a decrease in human population is decreasing resource use including wild animals
D. destruction of biodiversity
E. an increase in forest ecosystems
F. deforestation
The correct answers that describe the links between the environment and Covid-19 are options A. With the destruction of ecosystems, the natural barriers between host animals are reduced, B. We destroy ecosystems, creating channels for viruses to pass to humans, D. Destruction of biodiversity, F. Deforestation.
With the destruction of ecosystems, the natural barriers between host animals are reduced: The destruction of ecosystems, such as deforestation or habitat loss, can lead to increased contact between humans and wildlife. This close proximity increases the chances of zoonotic diseases, like Covid-19, transferring from animals to humans.
We destroy ecosystems, creating channels for viruses to pass to humans: Human activities that involve destroying natural habitats, encroaching upon wildlife, or engaging in the illegal wildlife trade create opportunities for viruses to jump species barriers and infect humans. Encroachment into natural areas can disrupt the balance of ecosystems, bringing humans in contact with new pathogens.
Destruction of biodiversity: Biodiversity plays a crucial role in maintaining healthy ecosystems and acting as a buffer against disease outbreaks. When biodiversity is reduced, ecosystems become more vulnerable, and the spread of diseases can be intensified.
Deforestation: Deforestation, the clearing of forests at a large scale, can disrupt ecosystems, displace wildlife, and increase the likelihood of contact between humans and potential disease-carrying animals. It can also lead to changes in local climate patterns, which may indirectly influence the spread of diseases.
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Two parents who are affected by a genetic disorder produce a normal child. This is an example of an/an _______.
autosomal dominant trait
autosomal recessive trait
X-linked recessive trait
Y-linked trait
Two parents who are affected by a genetic disorder produce a normal child is an example of an autosomal dominant trait.
What is an autosomal dominant trait?An autosomal dominant trait is any condition that is expressed only by the presence of the dominant allele and therefore this trait can be expressed in heterozygous individuals.
The heterozygous individuals can have a normal child if he/she is homozygous recessive for the genetic condition.
In conclusion, two parents who are affected by a genetic disorder produce a normal child is an example of an autosomal dominant trait.
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+ what is a Covalent Bond
Answer:
a chemical bond that involves the sharing of electron pairs between atoms.
Explanation:
Answer:
A covalent bond is the bond between two or more nonmetals. It is a chemical bond where electrons are shared between two or more nonmetals.
Explanation:
.How many chromosomes do immature sperm cells have once spermatogenesis concludes?A. 18B. 23C. 46D. 36
The correct answer is B, 23. Spermatogenesis is the process of sperm cell development in the testes. It involves the division of diploid germ cells (spermatogonia) into haploid sperm cells (spermatozoa). During spermatogenesis, the diploid germ cells undergo meiosis, resulting in four haploid cells, each with 23 chromosomes.
These cells are known as spermatids. The spermatids then undergo further maturation to become spermatozoa. Thus, once spermatogenesis concludes, immature sperm cells have 23 chromosomes.
immature sperm cells have 23 chromosomes once spermatogenesis concludes. This is due to the process of meiosis, which results in haploid cells with half the number of chromosomes as the original diploid cells.
Main Answer: Once spermatogenesis concludes, immature sperm cells, also known as spermatids, have 23 chromosomes.
Spermatogenesis is the process through which sperm cells develop and mature. It starts with spermatogonia, which are diploid cells containing 46 chromosomes. These cells undergo mitosis to produce primary spermatocytes, which also have 46 chromosomes. Primary spermatocytes then undergo meiosis I to form secondary spermatocytes, which have 23 chromosomes each. Finally, secondary spermatocytes undergo meiosis II, resulting in spermatids, which are the immature sperm cells containing 23 chromosomes.
23 chromosomes are present in immature sperm cells once spermatogenesis is complete.
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What kind of mutation is shown in the image? I WILL GIVE 10 POINTS AND MARK BRAINLIEST *ANSWER QUICKLY AND KNOW WHAT YOU’RE DOING I CAN’T GET THIS WRONG*
Answer:
deletion
Explanation:
Answer:
UUU
Explanation:
.
What species is the gray whale?
A Reptile
B Cetacean
C Lepidoptera
D Salmon
Answer:B Cetacean!
Explanation: Cetacean means marinemarine mammal and Gray Whales are mammals. #Im a teacher :)
Ex
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sciencebiologybiology questions and answersin silkmoths (bombyx mori), red eyes (re) and white-banded wings (wb) are encoded by two mutant alleles that are recessive to those that produce wild-type traits (re+and wb+); these two genes are on the same chromosome. a moth homozygous for red eyes and white-banded wings is crossed with a moth homozygous for the wild-type traits. the f1 have normal eyes
Question: In Silkmoths (Bombyx Mori), Red Eyes (Re) And White-Banded Wings (Wb) Are Encoded By Two Mutant Alleles That Are Recessive To Those That Produce Wild-Type Traits (Re+And Wb+); These Two Genes Are On The Same Chromosome. A Moth Homozygous For Red Eyes And White-Banded Wings Is Crossed With A Moth Homozygous For The Wild-Type Traits. The F1 Have Normal Eyes
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In silkmoths (Bombyx mori), red eyes (re) and white-banded wings (wb) are encoded by two mutant alleles that are recessive to those that produce wild-type traits (re+and wb+); these two genes are on the same chromosome. A moth homozygous for red eyes and white-banded wings is crossed with a moth homozygous for the wild-type traits. The F1 have normal eyes and normal wings. The F1 are crossed with moths that have red eyes and white-banded wings in a testcross. The progeny of this testcross are
wild-type eyes, wild-type wings
418
red eyes, wild-type wings
19
wild-type eyes, white-banded wings
16
red eyes, white-banded wings
426
a. What phenotypic proportions would be expected if the genes for red eyes and for white-banded wings were located on different chromosomes?
b. What is the rate of recombination between the genes for red eyes and those for white-banded wings
The phenotypic proportions which would be expected if the genes for red eyes and for white-banded wings were located on different chromosomes are:
(a)
1⁄4 wild-type eyes, wild-type wings1⁄4 red eyes, wild-type wings1⁄4 wild-type eyes, white-banded wings1⁄4 red eyes, white-banded wingsWhat is the distance and rate of recombination?The distance between the genes is four map units.
The rate of recombination between the genes for red eyes and those for white-banded wings is 4%.
(b)
The F1 heterozygote inherited a chromosome with alleles for red eyes and white-banded wings (re wb) from one parent and a chromosome with alleles for wild-type eyes and wild-type wings (re+ wb+) from the other parent. These are therefore the phenotypes of the nonrecombinant progeny, present in the highest numbers. The recombinants are the 19 with red eyes, wild-type wings and 16 with wild-type eyes, and white-banded wings.
RF = recombinants/total progeny × 100% = (19 + 16)/879 × 100% = 4.0%
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