In fruit flies, the gene for eye color is located on the X chromosome, and the red eye allele (R) is dominant
to the white eye allele (r). A carrier female is mated with a male fly with genotype X
rY. Which of the
following statements best describes the expected outcome of the cross?
a. The chance of an offspring having red eyes is 75%
b. The chance of an offspring having white eyes is 50%
c. The chance that a male offspring will have white eyes is 0%
d. The chance that a female offspring will have red eyes is 100%

Answers

Answer 1

Answer:

b. The chance of an offspring having white eyes is 50%

Explanation:

So the genotype of the male fly is X^r Y. This means the male has white eyes because he only has one X chromosome, so he will express whatever allele is on that chromosome.

The genotype of the female fly, though, is X^R X^r. This is because carriers are heterozygous for traits, and the sex chromosomes of most females is XX (with some exceptions, like XXX, or X (Turner syndrome)).

If we cross this, what are the outcomes? Do a Punnett square. You get the genotypes of X^r X^R, X^r X^r, X^R Y, and X^r Y. The expected phenotypes are a red eye female, white eye female, red eye male, and white eye male.

Now, let's look at the choices:

A.: The chance of an offspring having red eyes is not 75%; it is 50%.

B.: The chance of an offspring having white eyes is 50%!!!

C.: The chance that a male offspring will have white eyes is 50%, not 0%.

D.: The chance that a male offspring will have white eyes is 50%, not 100%.

Sooo, it's B!


Related Questions

Sarah adds 10 g of baking soda to 100 g of vinegar. The mixture begins 20
to bubble. When the bubbling stops, Sarah finds the mass of the resulting
mixture. She determines its mass is 105 g. The data she collected is in the
table. Does this follow the law of conservation of mass? Explain.​

Answers

Answer:

Yes, the reaction between baking soda and vinegar follows the law of conservation of mass.

Explanation:

The table and data was not attached to the question.

When baking soda and vinegar are mixed together, a chemical reaction occur resulting to release of gas (carbon dioxide gas)

Law of conservation of mass states that the total mass of the reactants in a chemical reaction must be equal to the total mass of the products.

That is mass of reactant = mass of product = 100g + 10g = 110g

Sarah got 105g as product because a gas of mass 5g was released during the reaction.

Sarah found the mass of the resulting

mixture without including the mass of the released gas.

A way to account for the mass of the gas is if the experiment is done in a closed system like zip lock bag to collect and account for the mass of the gas.

When this is done, the law of conservation of mass would be proven.

need help with this​

Answers

What are the question choices ?

Why do the cells inside of your stomach get replaced every few days , but other cells in your body can live for weeks, months or even years?

Answers

Answer:

hi, this is the answer of your question

the cells that line your stomach can renew as fast as every two days, because they in contact with digestive acid.

HELP ASAP!!!!

Describe a habitat in ur community that would support non vascular plant!!!!

Answers

Moist soils, Damp walls and mud regions where the water is not in limiting conditions are best suited for the growth of non vascular plants as they can not absorb and transport water to taller aerial organs.

would really appreciate a brainliest! Hope this helped! =)

what air mass carries warm, moist air

Answers

Maritime air masses form over water and are humid.

Answer:Maritime air masses form over water and are humid. Continental air masses form over land and are dry. Therefore, an air mass that develops over northern Canada is called a continental polar air mass and is cold and dry. One that forms over the Indian Ocean is called a maritime tropical air mass and is warm and humid.

Explanation:

Why does the northern hemisphere experience Spring in March, while the Southern Hemisphere experiences fall?

Answers

Explanation:

because the tilt of the earth on its axis

Answer:

The Sun is directly overhead in the Northern Hemisphere in March The Southern Hemisphere receives more direct rays from the Sun in March. The Northern and Southern Hemispheres get the same amount of energy from the Sun in March.

Explanation:

i hope this makes sense and helps out a little bit :))

If your phenotype is free earlobes and free earlobes is dominant what is your genotype

Answers

If your phenotype is free earlobes which is dominant then your Genotype can be Ff or FF.

Answer:

ff

Explanation:

hope this help

Which of the following ecological levels is correctly paired with its description?

A) Organism - all of the species living in a given area

B) Community - a group of one species living in a given area

C) Population - the regions on Earth that can support life

D) Ecosystem - all of the living and nonliving factors in an environment

E) Biosphere - anything that meets all of the characteristics of life

Answers

The correctly paired ecological level with its description is the option D. Ecosystem - all of the living and nonliving factors in an environment, among given options.

An ecosystem is a geographic region or area where all the living factors including animals, plants, bacteria, and others interact with all the physical or non-living factors such as landscape, humidity, water, and many more.

Other given ecological level and their description:

Organism - an organism is the living being that is the simplest form of ecological level composed of organ systems.Community - It is a population with similar characteristics that live in a particular area.Population -  a group of members of a particular species living and interbreeding within a given area.Organisms > Population > community > ecosystem

Thus, the correct answer would be option D.

Learn more about ecological level:

https://brainly.com/question/1323075

Which genotype represents a female carrier?


XHXh


XHY


XHXH

Answers

Answer:

option one is the answer. XHXh

Answer:

XHXH

Explanation:

A cell phone discarded in the United States can cause a person processing it in China, India, or Africa to suffer negative consequences if it is not handled properly.

True Or False

Answers

Answer:

true

Explanation:

it is true

hich of the following organisms receives at least some energy from plants?
A.
coyotes
B.
rabbits
C.
deer
D.
all of these

Answers

Answer: B

Explanation: Coyotes and deer dont really eat plants like that but deer do sometimes so my best bet is B or C. I hope this is helpful!!

What are the different possible gametes for AABBDd?

Answers

Answer:

8

Explanation:

Diffrent types AaBbDd

What climate conditions occurs during el ninio

Answers

Answer: El Niño is a part of a routine climate pattern that occurs when sea surface temperatures in the tropical Pacific Ocean rise to above-normal levels for an extended period of time.

hope this helps !_!

ENJOY groovie DAY
Global climate La Niña impacts tend to be opposite those of El Niño impacts. During a La Niña year, winter temperatures are warmer than normal in the Southeast and cooler than normal in the Northwest.

Because the trees that produce the sap to make rubber need to be cut down to make it, rubber is considered a nonrenewable resource.

TRUE

FALSE

Please help me!!

Answers

Answer: false

Explanation:

The raw material of making rubber products is the natural latex we collect from the rubber tree. Therefore, the answer is Yes. The rubber is a renewable resource. What's more, most of rubber products are made by reclaimed rubber.Hope this helps!

How does soil quality affect the characteristics of ecosystems?

Answers

The answer is. Soils play an important role in all of our natural ecological cycles—carbon, nitrogen, oxygen, water and nutrient.A handful of soil can contain billions of different organisms that play a critical role in soil quality to support plant growth.

The oak and the maple are two different species of trees that also belong to different genera. However, these oak and maples do share many characteristics. Based on their similarities, which levels of classification would they share?

Answers

Answer:

Maple and oak trees are both deciduous angiosperms, so the wood each produces is classified as a hardwood. However, the difference between maple and oak wood is significant, and it would be difficult to mistake one for the other. All species of oak display a distinctive well-defined grain pattern whereas the maple wood grain tends to be creamy white with little visible grain. The differences don't stop there, but to really appreciate them, it's important to realize that within the broad category defined by oak is a subset of species that differ significantly from each other. The same is true for maple

Am I right?? I am not sure ... just tryna help

why do lichens and mosses get mostly replaced by larger plant species during succession

Answers

Answer:

Lichens that colonize bare rock secrete acids that break down the rock and start the soil-production process. Also, as lichens die, they provide some organic matter that also contributes to soil. Mosses can then colonize the thin soil; as mosses die, the soil thickens more allowing other hardy species to colonize

Explanation:

pls help (ASASP)
This is the simplest invertebrate animal. Most are asymmetrical and reproduce either through asexual means or through internal, self-fertilization because most are hermaphrodites.

Answers

Sponge ? i may be wrong though

Answer:

whales I maybe wrong

Explanation:

individuals joining a population is an example of

Answers

Immigration or migration

The motion of an object can be described by its
OA. speed.
OB. position.
OC. direction
OD. all of these

Answers

Answer: the correct answer is d) all of these . here so the other person can get brainlest . have a good day/ night!!

Explanation:

Which would a microscope be LEAST useful in studying?
A. spider
B. amoeba
C. bacterium
D. paramecium

Answers

Answer:

A

Explanation:

spiders can be seen with the naked eye

Answer:

A

Explanation:

A spider is large enough to see and observe without a microscope. Bacteria, amoeba and paramecium are all very tiny, and can’t be seen with just our eyes. To see these things, we would need a microscope. Therefore, a microscope would be the least useful when studying A: a spider.

What did Mendel's cross-pollination of pea plants prove?


A. Inheritance of certain factors is dependent upon the genetic code.


B. Certain factors are dominant, and other factors are recessive.


C. All the cells in an organism carry the same hereditary factors.


D. Crossing a tall plant with a tall plant will always result in a tall plant.

Answers

Answer:B

Explanation:

Answer: The correct answer is B- Certain factors are dominant, and other factors are recessive. :)

Explanation:

I took the test. I also had to read a lot about Mendel for my science class.

Hope this helps! <3

The blood disorder in which the blood doesn't clot properly is known as-


Hemophilia


Erythemia


Color blindness

Answers

The Answer is Hemophilia

Which of the earths sphere is by far the largest?

Answers


The solid Earth, the largest of Earth's four major spheres. The thin, rocky outer layer of earth and is divided into oceanic and continental crust.

Directional selection only occurs in response to naturally occurring events.
Please select the best answer from the choices provided
Тrue
False

Answers

Answer:

False

Explanation:

Directional selection is a force in nature that causes a population to evolve towards one end of a trait spectrum. This change happens gradually and is hard to notice over a short period of time. This change is consistent and constant.

Comparing the skeletons of which of the following fish would
best show the evolution of a fish species?
a male fish and a female fish that could produce offspring
the same fish just before it received a cut and after it healed
a fish that lived recently and a fish that lived a long time ago
the same fish just after it hatched and when it was full-grown

Answers

Answer:

C. a fish that lived recently and a fish that lived a long time ago

Good luck with it :)

Helppp !
Mendel published his results in 1865, but the significance of his work was not
recognized at that time. What is one reason scientists were not excited about
Mendel's work at the time?
O
A. He did not have enough data.
O
B. His results were false.
O
C. He did not repeat his experiments.
O
D. His results conflicted with accepted theories.

Answers

the answer should be d

9 Light cannot escape the intense gravitational pull of a
black dwarf
red giant
main-sequence stan
black hole

Answers

I think it’s black hole

List eight factors that contribute to desertification.

Answers

Answer:

include urbanization, climate change, overuse of groundwater, deforestation, natural disasters, and tillage practices in agriculture that place soils more vulnerable to wind.

Explanation:

Why should the United States be concerned about air pollution in china

Answers

Answer:

The United States should be concerned because many of the things they have is manufactured or made in China . Some things like food or things that could be affected by germs or pollution could affect the users of it and make them sick.

Answer:

c. wind carries air pollution

Explanation:

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