because it mixes with both maternal and paternal chromosomes has the homologous pair of chromosomes in the following figure undergone crossing over? explain your answer either way.
Answers
Crossing over is a process in which homologous chromosomes exchange genetic material with each other during meiosis.
This process results in the formation of recombinant chromosomes. These recombinant chromosomes have a combination of genes from both the maternal and paternal chromosomes.
The process of crossing over occurs during the prophase I stage of meiosis. During this stage, homologous chromosomes pair up with each other and exchange genetic material.
This exchange of genetic material occurs at specific sites called chiasmata. The occurrence of chiasmata is a clear indication that crossing over has taken place.
However, it is not possible to determine whether crossing over has taken place in the given figure because there are no chiasmata visible in the figure.
Therefore, it cannot be determined with certainty whether the homologous pair of chromosomes has undergone crossing over or not.
Here you can learn more about homologous chromosomes
https://brainly.com/question/30371167#
#SPJ11
Related Questions
Explain the interactions that take place in a tropical
rain forest by describing two or more food chains
that you would find there. Then show how these
food chains might be part of a larger food web.
Answers
Explanation:
vwrb2thyjwfbwgh3ybwgheyj
Tropical rainforests are complex ecosystems with a diverse array of organisms, and the interactions between these organisms are vital for the functioning of the ecosystem.
What is tropical rainforest?A tropical rainforest is a dense forest found in areas with high annual rainfall and warm, humid climates.
Tropical rainforests are complex ecosystems with a diverse array of organisms, and interactions between these organisms are critical to the ecosystem's functioning.
Food chains, which depict the transfer of energy and nutrients from one organism to another, are one way to describe these interactions. Here are two examples of tropical rainforest food chains:
Insect food chain: Insects are abundant in tropical rainforests and serve as the foundation of many food chains. A food chain, for example, could begin with plant leaves, which are consumed by a caterpillar.
Fruit tree food chain: The fruit tree food chain is another important food chain in a tropical rainforest.
Thus, this interconnectedness is what makes tropical rainforests such diverse and fascinating ecosystems.
For more details regarding tropical rainforest, visit:
https://brainly.com/question/235998
#SPJ2
My black, heavy-coated dog is sitting on the grass in the sun on a hot day, panting. My friend’s white dog is with her, also sitting on the grass and panting. Compare and contrast the various ways in which the two dogs are gaining and losing heat (being careful to use the correct terminology)
Answers
The black, heavy-coated dog absorbs more heat due to its color, losing heat primarily through panting, radiation, and conduction. The white dog reflects heat and loses heat through panting, radiation, and evaporation, but not through conduction.
Dogs are among the most efficient creatures at dissipating heat, but they can easily overheat when exposed to high temperatures. A black, heavy-coated dog and a white dog sitting on the grass in the sun on a hot day are both trying to regulate their body temperatures by gaining and losing heat.
Compare and contrast the various ways in which the two dogs are gaining and losing heat (being careful to use the correct terminology): Black, heavy-coated dog: On a hot day, the black heavy-coated dog is at a disadvantage when it comes to keeping cool.
Since black coats absorb more heat than white coats, the dog is absorbing more heat from the sun's rays. As a result, they tend to lose heat primarily through panting, which is the most important way for dogs to get rid of excess heat. Panting causes water to evaporate from their tongues, reducing their body temperature.
The black dog loses heat through radiation, which is the transfer of heat from one object to another without the need for a medium. When the dog sits on the grass, heat flows from the dog's body to the grass, reducing the dog's temperature.
The black dog is also losing heat by conduction, which is the transfer of heat through direct contact between two objects. White dog: White coats, on the other hand, reflect heat and sunlight, making it easier for the white dog to regulate its body temperature. Panting is also the primary method of heat loss for white dogs.
Because panting releases moisture, the dog will also lose some heat via evaporation. Radiation, like in the case of the black dog, is also a way that the white dog loses heat when it is sitting on the grass.
The white dog is not, however, losing heat by conduction, which is the transfer of heat through direct contact between two objects, since it is not in contact with any surface that is cooler than its body temperature. Therefore, the white dog may not be losing heat as effectively as the black dog, since it is not losing heat through conduction.
To learn more about dogs
https://brainly.com/question/5992870
#SPJ11
By which process does oxygen pass out of a leaf?
Answers
Answer:
Photosynthesis.
Coz when plants carryout photosynthesis they release Oxygen and they use Carbon dioxide.
which farm animal has the largest eyes of any land mammal?
Answers
Answer:
The horse
Explanation:
The horse, being a farm animal, has the largest eyes of any land animal; the eyes of a horse are about 1.34 inches diameter wise.
I hope this helped!! ^v^
Are neutral based movements with slight amounts of extension appropriate for students with degenerative disc disease (ddd)?
Answers
Yes, neutral based movements with slight amounts of extension are appropriate for students with degenerative disc disease (DDD). Degenerative Disc Disease is a condition that affects the intervertebral discs in the spine. These discs function as shock absorbers and allow the spine to bend and flex.
DDD can cause pain and discomfort in the back and neck. However, proper exercise and movement can help alleviate these symptoms. Degenerative Disc Disease is a condition that affects the intervertebral discs in the spine. Neutral based movements are recommended for people with DDD because they help to maintain the natural curve of the spine and reduce stress on the intervertebral discs. Neutral spine exercises also help to strengthen the core muscles, which help to support the spine and reduce the risk of further injury. These exercises help to strengthen the core muscles and maintain the natural curve of the spine. Slight amounts of extension exercises can also be included in a student's exercise routine.
Neutral based movements with slight amounts of extension are appropriate for students with degenerative disc disease (DDD). By performing these exercises, students with DDD can improve their overall health and reduce the risk of further injury. It is important for students with DDD to consult with a healthcare professional before beginning any exercise program to ensure that they are performing the exercises safely and effectively.
To know more about Degenerative Disc Disease, visit at:
https://brainly.com/question/31034935
#SPJ11
Which of the following is a true statement about the relationship between organisms and the environment? Group of answer choices Animal populations are controlled by abiotic characteristics only in the environment. Organisms are both influenced by the environment through biotic and abiotic characteristics and can change those characteristics through their own processes. Plants are only influenced by the abiotic environment and animals are only impacted by the biotic components of the environment. Animals do not have any impact on the abiotic characteristics of the environment.
Answers
The correct question about the relationship between organisms and the environment is that organisms are affected by the environment through biotic and abiotic characteristics and can change these characteristics through their processes.
Abiotic elements or spectacles are environmental elements that consist of inanimate objects and are very influential on the life of living things, such as air, wind, sunlight, degree of acidity, salt, humidity, temperature, and soil. Biotic elements or biological elements are environmental elements consisting of invisible humans, animals, plants, and small organisms.
These two elements are interconnected to form an ecosystem. So that plants or animals need biotic and abiotic elements. i.e. for example animals need oxygen to breathe and plants need sunlight to carry out photosynthesis.
The correct option is B.
Learn more about the relationship between organisms and the environment at https://brainly.com/question/21227592
#SPJ4
What happens in the thylakoid
Answers
Answer:
Reactions performed in the thylakoid include water photolysis, the electron transport chain, and ATP synthesis. Photosynthetic pigments (e.g., chlorophyll) are embedded into the thylakoid membrane, making it the site of the light-dependent reactions in photosynthesis.
Explanation:
Organisation of plant tissues and growth questions
Answers
Plant tissues are comprises of cells which are similar and perform a specific function. Plant tissue are of two types meristematic tissue and permanent tissue.
What is meristematic tissue and permanent tissue?Meristematic tissue comprises undifferentiated cells, that are the building blocks of the specialized plant structures. Meristematic tissues comprises living cells with varied shapes.
Permanent tissue is made of meristematic cells, which has definite form and shape and have lost the power to divide and differentiate and are of three types - simple, complex and special. The simple tissues are of of three types namely parenchyma, sclerenchyma and collenchyma.
Plant tissue allow the maximum elongation of plants to absorb sunlight for the photosynthesis process. Primary phloem can transport the products of photosynthesis from the leaves to other parts of the plants.
For more information regarding plant tissue, visit:
https://brainly.com/question/3120884
#SPJ4
3. List one advantage and disadvantage of a monocot root system.
Answers
A disadvantage is that this type of root is not favourable to the water scarce area or drought. So such plants live in the areas where water is easily available.
The image shows the formation of daughter cells by the process of meiosis.
How does crossing over in meiosis affect the daughter cells?
A It passes the same genetic information to the daughter cells.
B It passes new genetic combinations to the daughter cells.
C It produces four daughter cells of equal size.
D It produces four daughter cells that are diploids.
Answers
Answer:
Pretty sure It's B
Explanation:
When the information is crossed, it is no longer the original one of either, and then it gets broken down, and made into 2, so Yeah. Plus I did this topic in school last year I think
failure of the implant that occurs after the initial integration is often caused by which condition(s)? 1. bacterial infection extending from the peri-implant tissues into the bone 2. generation of excessive heat when the implant hole is drilled into the bone 3. overloading of the implant during function group of answer choices 1, 2, 3 1, 2 1, 3 2
Answers
The implant that occurs after the initial integration is often caused by conditions 1 and 3.
Immediate implant placement is when an implant is placed at the same time as the natural tooth is extracted. Dental implant surgical guides and stents are used to position dental implants to ensure that the implant is placed in the most ideal location for angulation and depth into the bone.
They are usually made out of clear acrylic and fit over your existing teeth and or pink gum tissue. The jawbone is the most critical part of the body when it comes to sustaining and supporting the dental implant. Once the dental implant has fused to your bone after two months, then we can start with the second stage of surgery which involves uncovering the dental implant and connecting the abutment to the fixture.
Learn more about The initial integration here:-https://brainly.com/question/22008756
#SPJ1
why are unicellular organisms that reproduce by mitosis considered immortal
Answers
Unicellular organisms that reproduce by mitosis are considered immortal because they can theoretically divide and replicate indefinitely without aging or undergoing programmed cell death.
Unicellular organisms, such as bacteria and certain protists, reproduce asexually through mitosis. Unlike multicellular organisms, they do not undergo aging or programmed cell death, which contributes to their classification as "immortal."
In unicellular organisms, the process of mitosis results in the formation of genetically identical daughter cells. These daughter cells can then continue to divide and replicate, creating a lineage of identical cells. Since there is no programmed mechanism for cell senescence or death, the potential for reproduction and division is theoretically unlimited.
However, it's important to note that while unicellular organisms can theoretically divide indefinitely, they are not completely immune to death or external factors. Environmental conditions, predation, competition, and other factors can still impact the survival and lifespan of unicellular organisms. Additionally, mutations, DNA damage, and other cellular abnormalities can occur over time, potentially leading to cell death or loss of reproductive capability. Nonetheless, in the absence of such factors, the ability to reproduce through mitosis allows unicellular organisms to replicate without a defined limit, thus being considered "immortal" in a reproductive sense.
Kearn more about Unicellular organisms here:
https://brainly.com/question/15299967
#SPJ11
Help! kelp forests are a unique ecosystem off the coasts of california and new zealand. when the kelp began to disappear early in the twentieth century, other marine life in the forests began to disappear as well. which statement is most likely true about kelp in kelp forests?
kelp isn't needed by other organisms.
kelp isn't needed by other organisms.
kelp are primary consumers.
kelp are primary consumers.
kelp is a keystone species.
kelp is a keystone species.
kelp is a secondary species.
Answers
The claim that kelp is a keystone species in kelp forests is most likely accurate.
Why are California's kelp forests vanishing?But because of ocean warming and other human-caused changes, these vital habitats are disappearing. Massive kelp forests off the coasts of Tasmania and California were abruptly destroyed recently, highlighting how little was understood about preserving or regenerating these crucial marine ecosystems.
Why are kelp forests special?Because of their special holdfast structure, kelp forests may develop on top of rocky reefs where few other plants can flourish. Kelp holdfasts cling to submerged rocks rather than extending roots into the ground.
To know more about keystone species visit:-
https://brainly.com/question/24927375
#SPJ1
Answer: Kelp is a keystone species
I did the test
7)
Sexual reproduction is the most common form of reproduction in the animal kingdom and is the only reproduction type in humans.
With over seven billion humans on Earth, there is an enormous variation in genetics within the human population. Which
statements describe how cell division and sexual reproduction contribute to this huge genetic variation? Select ALL that apply.
A)
B)
Random fertilization of haploid eggs by many potential haploid sperm
increases genetic variation
Increased frequency of mitotic division ensures that animals have cells to
replace those that are lost.
The ability of homologous chromosomes to swap and exchange gene
regions in meiosis contributes to genetic variation.
Random assortment of homologous chromosomes in metaphase I increases
the variation of chromosomes that segregate into gamete cells in meiosis.
Increased chromosome number at the end of meiosis ensures that resulting
offspring have additional chromosomes containing increased genetic
variation
D)
E)
Answers
The statements that describe how cell division and sexual reproduction contribute to huge genetic variation is as follows:
The ability of homologous chromosomes to swap and exchange gene regions in meiosis contributes to genetic variation.Random assortment of homologous chromosomes in metaphase I increases the variation of chromosomes that segregate into gamete cells in meiosisRandom fertilization of haploid eggs by many potential haploid sperm increases genetic variationSEXUAL REPRODUCTION:
Sexual reproduction is the kind of reproduction that involves two organisms (male and female). Sexually reproducing organisms produce gametes or sex cells by a process called MEIOSIS. Meiosis reduces the chromosome number by half i.e. from diploid (2n) to haploid (n). A process called crossing over, which is the process by which non-sister chromatids of homologous chromosomes exchange their genetic material. The process of crossing over aids in genetic variation.The statements that describe how cell division and sexual reproduction contribute to huge genetic variation is as follows:
The ability of homologous chromosomes to swap and exchange gene regions in meiosis contributes to genetic variation.Random assortment of homologous chromosomes in metaphase I increases the variation of chromosomes that segregate into gamete cells in meiosisRandom fertilization of haploid eggs by many potential haploid sperm increases genetic variationLearn more at: https://brainly.com/question/12327654?referrer=searchResults
Answer:
1. Random fertilization of haploid eggs by many potential haploid sperm increases genetic variation.
2. Random assortment of homologous chromosomes in metaphase I increases the variation of chromosomes that segregate into gamete cells in meiosis.
3. The ability of homologous chromosomes to swap and exchange gene regions in meiosis contributes to genetic variation.
Explanation:
Meiosis has crossing over in prophase I which increases genetic variation, independent assortment in metaphase I, and resulting haploid cells by the end. The resulting haploid cells can fertilize other haploid cells, with a random nature. However, mitosis does not contribute to genetic variation. Also, meiosis results in haploid cells, not diploid cells or cells with an increase in genetic chromosome quantity.
as thermal energy transfers occur in the atmosphere and ocean,________ form
A.air bubbles
B.currents
C.jet streams
D.hurricanes
Answers
Answer:
B.currents
Explanation:
Hope this is helpful.
PLSSSS HELP!!! 25 POINTS + BRAINLY
Answers
Answer:
#3
Explanation:
The nucleotide insertion changes the reading frame, causing all kinds of problems. Almost none of the codons will code for the same amino acid.
plz help quickly:
The diagram below shows the ways cells can release energy from food depending on whether oxygen is present.
Respond to the following:
What is the name for the top process (Hint: what is the term for a process that does need oxygen present to occur) ?
What is the name for the bottom process (Hint: what is the term for a process that does not need oxygen present to occur)?
How many ATP are produced at the end of the top process shown?
How many ATP are produced at the end of the bottom process shown?
Answers
Answer:
1. Aerobic respiration
2. Anaerobic respiration
3. 36 ATPs
4. 2 ATPs
Explanation:
According to the diagram attached to this question, the process of cellular respiration is described. Based on whether OXYGEN is present or not, cellular respiration can be divided into two:
- Aerobic respiration is the respiration that occurs in the presence of oxygen. As shown in the top process, aerobic respiration starts with glycolysis → krebs cycle → Electron transport chain (ETC). At the end of these three steps, 36 ATP molecules results.
- Anaerobic respiration is the respiration that occurs in the absence of oxygen. As described in the bottom process of the diagram, anaerobic respiration starts with glycolysis and enters alcoholic or lactic acid fermentation depending on which product is formed (alcohol or lactic acid). At the end of the process, only 2 ATP molecules is synthesized.
Which best matches a type of genetic material with its description?
A.Nucleotides form a helical structure that is called a gene.
B.Genes combine to form structures called nucleotides.
C.Chromosomes create genes.
D.DNA is located in the nucleus.
Answers
Answer: C - Chromosomes create genes
Explanation: took the test 100%
Answer: chromosomes create genes
Explanation:
It’s c
Which of these is NOT a similarity between photosynthesis and respiration?
the type of compounds are the same for both
energy is needed for both reactions
both release oxygen into the atmosphere
both use oxygen and carbon dioxide
Answers
The Earth is also called a/an
a) Population
b) Ecosystem
c) Biosphere
d) Species
Answers
Sperm become capable of movement while in the _____. seminiferous tubules vas deferens ejaculatory ducts urethra epididymis
Answers
Sperm become capable of movement while in the epididymis. The sperm which is a male reproductive cell can further be discussed below.
Where are sperms produced in the body?The sperm is the cell of the male reproductive system which is produced in the testes.
The testicles are made up it tiny tubes called seminiferous tubules which houses germ cells that divide and change until they resemble tadpoles with a head and short tail.
They are then moved to the epididymis where their development is completed after five weeks. Active movement of the sperm in the epididymis starts after its full development.
Therefore, Sperm become capable of movement while in the epididymis.
Learn more about sperm here:
https://brainly.com/question/17036361
According to evolutionary theory, species that exist today are the result of a
slow, continuous change of living things over time. Why is this considered to
be a theory and not a law?
A. A law is based on mathematical calculations. Evolutionary theory
is a description based on observations.
O B. A law is supported by extensive research. Evolutionary theory is
an educated guess.
O
C. A law describes natural events but does not attempt to explain
them. Evolutionary theory is an explanation of how living things
have changed over time that is well supported by scientific
evidence.
O D. A law has been proved with scientific evidence. Evolutionary
theory may change when new evidence is found that does not
support the theory.
Answers
Answer:
It's answer could be A aur B
Explanation:
not sure but I know that this theory is given by dar VIN
Lysosome can be found in which cells?
O Plant
O Animal
O Both Plant and Animal
Answers
Answer:
Found in both plant and animal
Explanation:
PLEASE HELP!
1). The "Princess Parrot" is a bird native to Australia. The male has evolved very long tail feathers while the female of the species has a shorter tail. Using your understanding of natural selection, explain how this trait may have been selected for.
2).
Natural selection of a trait requires that there is variety in the ways that trait is expressed in a population. Let’s say that a population began with only one form of a trait. Explain two mechanisms that would introduce new phenotypes for the trait into the population
Answers
1) The evolution of the long tail feathers in male Princess Parrots can be explained by sexual selection, a type of natural selection that favors traits that increase an individual's mating success.
2) Both mutation and gene flow provides a source of new genetic variation that can be acted upon by natural selection, allowing populations to adapt to changing environments over time.
1) The male with the longest and most colorful tail feathers is more attractive to females, and therefore, more likely to mate and pass on his genes to offspring. This preference for longer tail feathers has resulted in males evolving longer and more elaborate feathers. Females have not experienced the same selection pressure, as males are attracted to females regardless of their tail length.
2) Mutations are random changes in the genetic code that can create new genetic variations that were not present in the population before. Another mechanism is gene flow, which occurs when individuals from different populations mate and exchange genes. Gene flow can introduce new alleles or variations of a trait into a population, increasing genetic diversity.
To learn more about genetic follow the link:
https://brainly.com/question/12985618
#SPJ4
Please help me! Please show the work!
Answers
Answer:
7. 1800cm
8. 0.023
9. 50mm
10. 530,000
Explanation:
7.
18 x 100= 1800
8.
23÷1000= 0.023
9.
5 x 10= 50
10.
5.3 x 10,000= 530,000
Hopefully this helps you a little bit
Which of the following terms is a comparison between the number of copies
of a particular allele and the number of copies of that gene?
A. Allele dominance
B. Allele frequency
C. Allele density
O D. Allele strength
SUBMIT
Answers
Answer:
A: Allele Dominance
Explanation:
Treatment of Invasive Brain Tumors Using a Chain-like Nanoparticle. Cancer Res 2015, 75 (7), 1356-1365
Answers
Importance of Treatment of Invasive Brain Tumours
There haven't been any new methods created in more than 30 years for treating invasive brain tumours like glioblastoma multiforme (GBM), which is fatal upon diagnosis.
Because GBM tumours are typically diffuse, highly invasive, and non-localized, and because most chemotherapeutic agents have poor blood-tumour barrier (BTB) penetration, current methods for treating glioma are only partially effective.
Due to the BTB's existence, systemic chemotherapy is no longer the preferred method of treatment for brain tumours. Implantable biodegradable drug depots within a brain tumour are currently being employed in clinical practice to localize a chemotherapeutic and enable regulated drug delivery in an effort to avoid having to enter the BTB.
The drug molecules must spread to all cancer cells, including the difficult-to-reach ones, even after successfully targeting brain tumours. This causes extensive anticancer action over the total volume of tumours. Drug release from nano chains can be remotely activated due to mechanically produced liposomal membrane flaws brought on by the oscillation of the IO component of the nanochain in the presence of an RF field, in contrast to the normally sluggish release of nanoparticles' contents.
Learn more about Brain here,
https://brainly.com/question/11950231
# SPJ4
ll are true statements concerning epinephrine except: it elevates the systolic blood pressure. it decreases the heart rate and cardiac output. it dilates the bronchial tubes. it dilates the pupils.
Answers
Epinephrine doesn't increase cardiac output or heart rate, which is a misleading claim.
The adrenal gland releases the hormone epinephrine in reaction to stress or danger. It raises blood pressure, cardiac output, and heart rate via acting on the sympathetic nervous system. In addition to dilating the pupils to improve vision, epinephrine also expands the bronchial passages to promote breathing. These side effects are a result of the body's fight-or-flight reaction and aid in getting the body ready to react to a perceived threat. However, epinephrine can also cause undesirable side effects like tremors, anxiety, and elevated blood sugar. Asthma attacks, cardiac arrest, and severe allergic reactions are all regularly treated with it in medicine.
learn more about epinephrine here:
https://brainly.com/question/30160747
#SPJ11
During an experiment, readings for blood pressure in a person’s body were found to be constant. However, when measured by a different blood pressure cuff, the readings differed by 15 points for each reading. This difference indicates that the results are
but not
Answers
During this experiment, readings for blood pressure were constant for a person, however, when with a different blood pressure cuff, the readings differed by 15 points for each reading. This difference indicates that the results are reliable but not valid.
In this experiment readings of the blood pressure of a person are consistent in the right construct but with different cuff, every time shows the difference in readings more or less 15 points.
this difference is due to the different cuffs so these differences are reliable but not valid.The measure can be valid but not reliable if it is measuring the right construct, but not doing so in a consistent manner.validity and reliability are independentThus, the difference indicates that the results are reliable but not valid.
Learn more about validity vs. reliability.:
https://brainly.com/question/12811162
Which phrase describes the movement of air in general?
O from south to north
O from high pressure to low pressure
O from low pressure to high pressure
O from north to south