A certain red-flowered plant is self-fertilized. The progeny are 131 white-flowered plants and 169 red-flowered plants. Give a genetic explanation for these observations.

Answers

Answer 1

Answer:

Ratio of red flowers: white flowers = 169: 131 = 9: 7 as given in the question. It is clear that the color is possible only by at least 2 genes.

Let assume genes are A and B.

Now the cross AaBb (Red) x AaBb (Red)

Gametes ----------> AB Ab aB ab AB Ab aB ab

AB Ab aB ab

AB AABB (Red) AABb (Red) AaBB (Red) AaBb (Red)

Ab AABb (Red) AAbb (White) AaBb (Red) Aabb (White)

aB AaBB (Red) AaBb (Red) aaBB (White) aaBb (White)

ab AaBb (Red) Aabb (White) aaBb (White) aabb (White)

The ratio of Red flowers: White flowers is 9:7

The red color flower is produced when both the alleles of genes are dominant. if any of the alleles of genes is recessive, it will produce the white color flower. This is one of example complementary gene interaction where the presence of both genes in the dominant form complements each other to produce red color flowers.

Related Questions

What is the difference in mechanism between protein entry into ER and integration of transmembrane proteins into ER membrane?

Answers

Protein entry into the ER lumen is facilitated by signal sequences present in the proteins whereas transmembrane protein integration into the ER membrane requires transmembrane domains.

Protein entry into the ER lumen (or insertion into the ER membrane) and integration of transmembrane proteins into the ER membrane differ in their mechanism. The following is a description of the differences between these two mechanisms.

Protein entry into the ER lumen is facilitated by signal sequences present in the proteins. Signal sequences, or signal peptides, are short stretches of amino acids located at the N-terminal end of proteins that are destined for the ER lumen or secreted outside the cell. Signal sequences interact with signal recognition particles (SRP), which then transport the protein to the ER membrane. Afterward, the SRP binds to the SRP receptor, and the protein is translocated into the ER lumen. The nascent protein is then translated, modified, and folded in the ER lumen.In contrast to protein entry into the ER lumen, transmembrane protein integration into the ER membrane requires transmembrane domains.

Transmembrane domains are composed of hydrophobic amino acids that cross the hydrophobic lipid bilayer of the membrane. Transmembrane proteins are inserted into the ER membrane through two mechanisms: The first mechanism is the signal anchor sequence, where a stop-transfer anchor sequence retains the protein in the membrane. The second mechanism is the signal peptide cleavage, where signal peptides in the protein cleave after they enter the ER lumen, and the transmembrane domain remains in the membrane. The protein is then translated and folded in the membrane.

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Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used.
From 1984 to 2012, the wing length of cliff swallows in the general population generally--decreased
During the same time period, the wing length of cliff swallows killed on the roads generally---increased
In most years where data was collected, the wings of cliff swallows killed on the roads were__ than the wings of swallows found in the population at large.---longer
-Shorter wings allow cliff swallows to take off from the ground more vertically, enabling them to better avoid oncoming cars. As a result, cliff swallows in populations near highways with wings have a survival advantage.

Answers

During the same time period, the wing length of cliff swallows killed on the roads generally increased. In most years where data was collected, the wings of cliff swallows killed on the roads were longer than the wings of swallows found in the population at large. From 1984 to 2012, the wing length of cliff swallows in the general population generally decreased.

What are cliff swallow?

Cliff swallows (Petrochelidon pyrrhonota) are small migratory birds that are found throughout much of North and South America. They are named for their habit of nesting in cliffs, although they will also nest in other structures such as bridges and buildings.

Cliff swallows have distinctive features, including a reddish-brown head, a blue-black back and wings, and a pale underbelly. They have a short, triangular bill and a forked tail. They are sociable birds and often nest in large colonies.

Cliff swallows feed on insects, which they catch in midair using their agile flight. They are known for their aerial acrobatics, which they use to catch insects on the wing. They are an important natural control on insect populations and play a vital role in many ecosystems.

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if I were to add salt to water and freeze it, the water would take longer to freeze or is it that it needs a colder temperature to freeze? If i wanted to do this experiment how would I test it, based on time or changing the temperature?

Answers

Answer:

well because of the salt in the water that is why it takes longer to freeze.

Explanation:

To test for it, use two containers, one which contains only water and the second should be one with salt solution.

then experiment the time each take to freeze.

hope it helps .

Which of the follow is the largest in terms of the number of organisms?

Answers

Explanation:

We can consider numbers of species. Or, we can consider numbers of individual organisms. In terms of numbers of species, insects certainly represent the largest percentage of the world's organisms. There are more than 1 million species of insects that have been documented and studied by scientists.

Explain why a disease that affects cells is a problem for the whole organism?

Answers

Answer:

because the cells is what helps your body and when that stops working it can be a problem

Explanation:

true or false cystic fibrosis and phenylketonuria are common autosomal dominant disorders brainly

Answers

Answer:

False

Explanation:

Cystic Fibrosis and Phenylketonuria are common autosomal recessive disorders

Answer:

False

Explanation:

They're recessive

Edge biology

A student completed a lab report. Which correctly describes the difference between the “Question” and “Hypothesis” sections of her report?

A: “Question” states what she is asking, and “Hypothesis” states the result of her experiment.

B:“Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format.

C: “Question” describes what she is trying to find out, and "Hypothesis" states the procedures and methods of data collection.

D: “Question” describes what she is trying to find out, and “Hypothesis” states any additional information or prior knowledge about the question.

Need it asap no rocky

Answers

According to the scientific methodology, researchers must make themselves a question and then propose a hypothesis. B:“Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format.

What are the question and the hypothesis?

When following the scientific methodology researchers must formulate a question and a hypothesis.

The question is what the researcher wants to know. It is triggered when making an observation for which there is no explication yet. The researcher wants to know what is causing a certain event and how or why it is occurring.

A hypothesis is a scientific conjecture, not verified, that requires corroboration. It is a possibility, not a fact. It is a claim of how it works a relationship between two or more variables.

The researcher hypothesizes to predict what is going on or what is expected to occur.

Option B:“Question” states what she is asking, and “Hypothesis” states what she thinks the answer to that question is in “if . . . then . . . because” format.

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Draw a table which explains the function(s) of each macromolecule. For those that have monomers, list them. For the one that does NOT have a monomer, list 2 molecules that Mae it up.

Answers

There are four main types of macromolecules found in living organisms: carbohydrates, lipids, proteins, and nucleic acids. Each macromolecule has its own unique function in the body.

What is the function(s) of each macromolecule?

Carbohydrates: Carbohydrates are molecules made up of carbon, hydrogen, and oxygen atoms, and they are a primary source of energy for the body. They provide quick energy to cells and are stored in the form of glycogen in the liver and muscles.

Lipids: Lipids are molecules made up of carbon, hydrogen, and oxygen atoms, and they are insoluble in water. They serve as a source of energy, a storage form of energy, and as a component of cell membranes.

Proteins: Proteins are large molecules made up of amino acids, and they have a wide range of functions in the body. Some proteins serve as enzymes, which catalyze chemical reactions in the body.

Nucleic acids: Nucleic acids are molecules made up of nucleotides, and they carry genetic information in the form of DNA and RNA. DNA is found in the nucleus of cells and contains the genetic code that determines an organism's traits.

Therefore,

Macromolecule Monomers (if applicable) Functions

Carbohydrates Monosaccharides Energy source, structural component

Proteins Amino acids Enzymes, structural components, hormones, defense

Lipids None Energy storage, membrane structure, signaling

Nucleic acids Nucleotides Genetic information storage and transmission

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Which organism is likely to carry out the process shown in the diagram?
CO, + H,O
Heat
www
Chloroplast
Mitochondrion
MASS
Respiration
OA. Barn owl
OB. Mushroom
C. Alligator
-0₂
Sugar
ATP

Answers

The organism that is most likely to carry out the process shown in the diagram is Calla lily (option D).

What is cellular respiration?

Cellular respiration is the process by which cells obtain chemical energy by the consumption of oxygen and the release of carbon dioxide.

According to this question, a diagrammatic representation of cellular respiration is given in the above chart. Based on the chart, chloroplast is included to release oxygen gas needed for respiration.

Only green plants possess chloroplast used for photosynthesis, hence, Cana lily is the most likely organism to carry out the above process.

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Select all that apply.
Check all of the following, which might be considered a potential red flag on a controlled substance
prescription:
A patient from a town 30 miles away that is prescribed by a physician in the same town the patient lives in for
a controlled substance at a high dose
Your neighbor requesting a prescription fill by their dentist for #10 hydrocodone for a tooth abscess
A patient filling a prescription from the emergency room to treat their broken arm
A father and son presenting the same oxycodone prescription from the same prescriber for the same
quantity and strength
A patient that requests to fill their hydrocodone prescription for cash when they filled losartan for a third-
party payer
A new patient presenting an oxycodone 30mg prescription from their podiatrist

Answers

A red flag in a drug prescription occurs when drugs are given inappropriately.

What is a controlled substance?

A controlled substance is one that is not easily prescribed over the counter because the drug is only given in rare condition. All the opium drugs are controlled substances.

The following are red flags in a prescription involving a controlled substance:

A patient from a town 30 miles away that is prescribed by a physician in the same town the patient lives in for a controlled substance at a high dose.

Your neighbor requesting a prescription fill by their dentist for #10 hydrocodone for a tooth abscess.

A father and son presenting the same oxycodone prescription from the same prescriber for the same quantity and strength.

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The force that
Governs the
The greater the
The
system - this explains why the planets
all objects with
of the
☆
of an object, the greater amount of
has more gravitational force than any of the
around the Sun
toward one another
force
in the solar

Answers

Answer:

the greater amounts of has more gravitational force than any of the around of sun toward one another force in the solar

A health history can determine if _[blank]_ is needed prior to starting an exercise program.Which option correctly completes the sentence?

Answers

A health history can determine if physician approval is needed prior to starting an exercise program.

A. protective membranes
C. storage units
0
Vacuoles are the
B. brain
for the cell.
D. unnecessary organelles

Answers

Answer:

it's d ️️

Explanation:

I did it

What causes our seasons?

Answers

Answer:

Seasons occur because Earth is tilted on its axis relative to the orbital plane, the invisible, flat disc where most objects in the solar system orbit the sun. ... In June, when the Northern Hemisphere is tilted toward the sun, the sun's rays hit it for a greater part of the day than in winter.

Answer:

It is because the earth's spin axis is tilted with respect to its orbital plane

Explanation:

This is what causes the seasons. When the earth's axis points towards the sun, it is summer for that hemisphere. When the earth's axis points away, winter can be expected. I hope it helps you

Explain how a species can evolve through natural selection. What is natural selection in your own words?

Answers

Natural selections is where organisms change naturally because of their environment or adaptations they needed to make. example: Arctic rabbits turning white to blend into the snow to hide better from predators.

Answer:

Natural selection is process that allow organism that has suitable attributes with its environment, to thrive (grow in population), to survive, and to pass its genetic information to the next generation (children, grand children).

Explanation:

For example: in an island, a male giraffe, and a female giraffe produce giraffe children with various attributes. Some giraffe children have short neck, and some have long neck.

Giraffe eats the leaves of Acacia tree, and Mimosa tree. Many acacia tree and tall mimosa tree in that island, are tall trees, so a giraffe that has long neck can reach that tall tree, eat the leaves, survive, and grow to adult stage.

A giraffe that has short neck, can only eat small quantity of leaves, then it suffers, can not grow, becomes skinny, and unable to compete with other giraffe finding its mate. It can't pass its genetic information to the next generation, and becomes extinct.

That's how natural selection, in above case, an island with a lot of tall acacia trees and mimosa trees selects giraffe with long neck to survive.

The next interesting follow up question would be how a male giraffe and a female giraffe produce various kind of giraffe children? The answer is a pair of chromosome become a single chromosome in giraffe sperm, and in a giraffe eggs. But that question and its answer are beyond the scope of the original question.

Ways to stop water pollution???????

Answers

Answer: Stop throwing Water bottles, trash in the water (;

Explanation:

A student says an organism that is both a first-level and second-level consumer is an omnivore. Is that student correct? Explain.

Answers

Omnivores are individuals that feed on plants and animals. These organisms are consumers and occupy different levels in trophic webs. The student is correct. An organism that is both a first-level and second-level consumer is an omnivore.

What are omnivores?

The word omnivore has a Latin origin,

Omni refers to everything or many thingsVorare means eat

Omnivores are all heterotroph organisms that feed on several sources of food. They do not have a specialized diet so they feed on plants and animals.

They can be considered opportunist feeders, taking advantage of anything they find on their way.

In trophic webs, omnivores can occupy one level in a trophic chain but another level in another chain. They can be either herbivorous or carnivorous.

Individuals that are both the first-level and second-level consumers are omnivores because they feed on plants and on animals.

The student is right.

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The Arizona poppy has adapted to living in areas that receive less rain, but there are still periods of time that a drought occurs. What part(s) of photosynthesis would the plant not be able to perform if there is no rain? What would be the long-term effects on the plant if the drought were to continue? Explain your answer.

Answers

If there is no rain, the Arizona poppy would not be able to perform the light-dependent reactions of photosynthesis.

What are the stages of photosynthesis?

Photosynthesis is a process that involves two main stages: light-dependent reactions and light-independent reactions.

Water is required in the light-dependent reactions to provide the electrons that are needed to generate ATP and NADPH, which are then used in the light-independent reactions to produce glucose.

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Our mountain regions are unique and beautiful places. We must preserve them for future generations. One of the most serious threats to our mountains is ridgetop development. Large housing developments built on steep slopes and along mountain ridges are unsightly. Also, they adversely affect the scenic views that draw tourists to our region each year. Who wants to drive to the mountains to see not the lovely tree-covered outline of the gently sloping mountain ridges against the sky, but rows of houses jutting from the ridges and slopes with little or no tree cover between them? With tourism as the biggest industry in our area, maintaining our scenic ridgelines is crucial to continued economic success here.

Ridgetop development not only detracts from scenic mountain views and threatens our area’s top industry, it also harms the environment. Stripping large areas to create multiple building sites removes the trees and other plants. These resources provide natural erosion barriers on steep slopes. Large housing developments on ridges often increase erosion and runoff into streams and rivers.

What type of essay is this, primarily?

Answers

This is a persuasive essay primarily focused on highlighting the negative impact of ridgetop development on mountain regions.

The essay provided presents a clear argument and aims to persuade the reader about the importance of preserving mountain regions by discouraging ridgetop development. The writer expresses their opinion on the issue and supports it with reasons and evidence.

The essay falls under the category of a persuasive essay, as its main objective is to convince the audience to take action or support a specific viewpoint. The author emphasizes the unique beauty of mountain regions and the need to preserve them for future generations. They argue against ridgetop development by highlighting the negative consequences it has on scenic views and the tourism industry.Additionally, the detrimental environmental impact of stripping large areas and increasing erosion is discussed.

Overall, the essay combines persuasive techniques, such as presenting arguments, providing evidence, and appealing to the reader's emotions, to advocate for the preservation of mountain regions and discourage ridgetop development.

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Which correctly lists three planets that have rings?
O Jupiter, Mars, Saturn
O Mars, Jupiter, Mercury
Mercury, Mars, Venus
O Neptune, Uranus, Jupiter

Answers

The minor Deimos Ring, as mentioned earlier, but it is not comparable to the extensive ring systems of Saturn or Jupiter Mercury does not have any known rings the correct combination is "Jupiter, Mars, Saturn" when referring to planets that have rings.

Out of the four options provided, the only combination that consists of three planets with rings is "Jupiter, Mars, Saturn."

Jupiter: Jupiter is the largest planet in our solar system and is well-known for its impressive ring system.

Although not as prominent as Saturn's rings, Jupiter's rings are made up of fine dust particles and are relatively faint compared to those of Saturn.

Mars: Mars is the fourth planet from the Sun and is often referred to as the "Red Planet."

While it doesn't possess a large, visible ring system like Saturn or Jupiter, it does have a thin dust ring called the Deimos Ring.

This ring is composed of dust particles kicked up by the Martian moon Deimos as it orbits the planet.

Saturn: Saturn is renowned for its spectacular and prominent ring system. It is composed of countless icy particles ranging in size from micrometers to meters.

Saturn's rings are one of the most iconic features in our solar system and are visible even from small telescopes.

The other options listed do not accurately represent planets with ring systems:

Mars, Jupiter, Mercury: While Jupiter is included, neither Mars nor Mercury have prominent ring systems.

Mars has the minor Deimos Ring, as mentioned earlier, but it is not comparable to the extensive ring systems of Saturn or Jupiter. Mercury does not have any known rings.

Mercury, Mars, Venus: None of these three planets have significant ring systems.

Mercury and Venus do not possess any rings, and Mars has only the minor Deimos Ring.

Neptune, Uranus, Jupiter: Neptune and Uranus both have ring systems, but Jupiter does not.

Therefore, this option does not accurately list three planets with ring systems.

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Out of the four options provided, the only combination that consists of three planets with rings is "Jupiter, Mars, Saturn."

Jupiter: Jupiter is the largest planet in our solar system and is well-known for its impressive ring system.

Although not as prominent as Saturn's rings, Jupiter's rings are made up of fine dust particles and are relatively faint compared to those of Saturn.

Mars: Mars is the fourth planet from the Sun and is often referred to as the "Red Planet."

While it doesn't possess a large, visible ring system like Saturn or Jupiter, it does have a thin dust ring called the Deimos Ring.

This ring is composed of dust particles kicked up by the Martian moon Deimos as it orbits the planet.

Saturn: Saturn is renowned for its spectacular and prominent ring system. It is composed of countless icy particles ranging in size from micrometers to meters.