Sickle cell anemia is carried on the recessive allele. Normal is dominant. Mary is a carrier for sickle cell and Mike is normal (but not a carrier).
A. What are the chances of Mary and Mike having a sickle cell child?
B. What are the chances of them having a child who is a carrier?

Answers

Answer 1

Answer:

A. 0

B. 1/2 or 50%

Explanation:

Let us assume that the sickle cell anemia trait is represented by s and the alternate normal version by S.

Mary, a carrier would have the genotype Ss.

Mike, a perfectly normal person would have the genotype SS.

If both Mary and Mike marry:

                     Ss     x     SS

offspring: SS    SS    Ss    Ss

(A) In order to have sickle cell, the two alleles must be recessive. None of the offspring from the cross has two recessive alleles. Hence, the chances of Mary and Mike having a sickle cell child is zero.

(B) From the cross, two out of four of their potential offspring have the trait in heterozygous condition. Hence, the chances of Mike and Mary having a child who is a carrier is 1/2 or 50%.


Related Questions

How fast can you answer correct..? How fast can i give you brainliest. Explain Your answer:D/ HELP........................................

Answers

Answer: A.

Explanation:Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a ... Between each pulse, the radar station serves as a receiver as it listens for ... If pulses are emitted too frequently, the returns from one pulse will be ... Over the area covered by radar echoes, a program assigns a precipitation type

Answer:

A

Explanation:

becuase it A

And the person on top or down said it A so i think it A

what is the theory of plate tectonics?

Answers

Answer: The theory states that the earth's crust is divided into massive slabs known as tectonic plates.

Explanation:

These plates move on the mantle which is a layer made of magma, which consists of semisolid rocks.The heat from earth's core causes convection currents much like in a beaker full of water.But, here the force developed by the magma is so great that it slowly moves the plates like boats on sea over millions of years.

Answer: The theory of tectonic plates says that the Earth's outer crust, the lithosphere, is separated into plates that are covering this entire world.

The crab Lynda tell Ella ya carries a pair of sea anemones on its claw. The crab uses the sea anemones stinging tentacles as protection and the sea an enemy obtain small food particles released by the crab as it feeds which type of symbolic relationship does this best illustrate

Answers

Answer: Mutualism

Explanation: The relationship between the crab and the sea anemone describes mutualism, a type of symbiotic relationship.

Mutualism describes the ecological interaction between two or more species that benefits both; typically involving the exchange of substances or services between both.

It plays a key role in ecology and is thought to have driven the evolution of much of the diversity currently in existence today.

In an ecosystem, what happens to the atoms of certain chemical elements, such as carbon, oxygen, and nitrogen? * They move into and out of living systems. O They are only found in abiotic factors. O They move out of living systems and do not return. O They move into living systems and remain there.​

Answers

Answer:

They move into and out of living systems

Explanation:

The gases in an ecosystem like carbon, nitrogen, and oxygen all move into and out of the living systems through the process of animal respiration and plant absorption of carbon and release of oxygen. They are found on diffused forms in blood and cells of body, can be found in aquatic and terrestrial components. They are processed through animal wastes and in the consumption of matter.

Match with the correct pattern of inheritance.
a. Multiple alleles
b. Polygenic traits
c. Incomplete dominance
d. Codominance

Answers

Answer: Multiple alleles

Explanation:

NEED HELP ASAP: List two ways in which the atmosphere would be impacted in the absence of the biosphere. Use complete sentences.

Answers

Answer:

If there would be no biosphere on earth the atmosphere would be quite different. There would be no oxygen to support because oxygen is liberated by plants in photosynthesis so no plants means no oxygen. The earth would be a planet without life just like Venus and Mars. Therefore, no organism would be surviving in the world.

There would be no  negligible green house effect and global warming since it is all created due to activities of men.The earth's atmosphere would be much cleaner and with lesser amount of CO2 and O2 but no organism would be there to use them.

Hope it help!

There would be more carbon dioxide, which would eventually burn away the ozone layer, as well as no oxygen, and all animal and plant life would perish.

What is biosphere?

The biosphere is basically comprised up of the areas of the Earth where life can be found.

The biosphere encompasses all the things from the deepest tree root systems to the dark environment of ocean trenches, including lush rainforests, and high mountaintops. Earth is described by scientists in terms of spheres.

Because it is all of life, the biosphere is as important as life itself. Earth would be a lifeless planet like Mars or Venus without the biosphere. Human insecurity grows as natural resources are depleted.

The biosphere is the zone that contains all living things. The biosphere requires the lithosphere, hydrosphere, and atmosphere to exist. There would be no life on Earth if these three spheres did not exist.

Thus, this way, the atmosphere would be impacted in the absence of the biosphere.

For more details regarding biosphere, visit:

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Which elements combine to form carbohydrates?
A. Carbon, Hydrogen, and Oxygen
B. Carbon, Nitrogen, and Oxygen
C. Carbon, Calcium, and Hydrogen
D. Carbon, Potassium, and Calcium​

Answers

Answer: I think it's A or C

(I'm so sorry if it's wrong)

Hope this Helps!

The white blood cells can be compared to the army and soldiers of our country. Explain the reason in about 3-4 lines.

Answers

Answer:

Please Mark as Brainliest

Explanation:

The white blood cells provide immunity to our body. They help in fighting against diseases, infections, allergies, and foreign particles. These cells keep our bodies safe and healthy, much like the soldiers of a nation.

-find a foreign target
-capture them
-kill them
-look out for signs of them returning

11. DDT is a pesticide that can't be broken down by organisms. If a farmer sprays
DDT on the strawberry plants above, which trophic level will contain the highest
concentration of DDT?
a. Producers
b. Herbivores
c. Second-order Consumers
d. Third-order consumers

Answer quickly plz

Answers

The answer is A. I did the assignment

critical thinking scientist can determine the age of a substance using a method that compares the amount of different forms of carbon atoms present in a substance. is this method more useful for organic substances or organic substances explain

Answers

Answer:

organic substances

Explanation:

What is a volcano?
A. a tall mountain
B. a chemical reaction that produces fire
C. an atmospheric condition
D. an opening in Earth’s crust

Answers

Answer:

c

Explanation:

Answer:

D

Explanation:

I hope this is correct and have a great day

What is the main function of the cell membrane?
A. To pass the genetic information from one cell to another.
B. To protect the cell from Invaders.
C. To regulate what enters and leaves the cell.

Answers

Answer:

pretty sure its b

Explanation:

The answer for this is A.

What does the term “carbon cycle” mean?

Answers

Answer:

Carbon cycle is:

the series of processes by which carbon compounds are interconverted in the environment, involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.

Select the correct answer.
Kevin has two test tubes filled with a clear liquid. One of them is water, and the other is vinegar. He adds a little baking powder to each liquid to
identify the test tube that contains vinegar. Select the correct observation and conclusion.
OA The liquid in which baking powder dissolves is vinegar.
OB. The liquid in which baking powder settles down is vinegar.
OC. The liquid in which bubbles are formed is vinegar.
OD. The liquid that does not change color is vinegar.
O E. The test tube that becomes cold contains vinegar.

Answers

Answer:

C. The Liquid which bubbles form is vinegar

Explanation:

Bubbles are one of the signs of a chemical reaction when there's bubbles there's gas.

Answer:

OC. The liquid in which bubbles are formed is vinegar.

how to get big and all thing

Answers

Answer:

hih

Explanation:

what that means what ur talking bout

Answer:

What I'm confused

All living things must contain genetic material. Which of the following nonliving things also has this characteristic? A. Fire B. Cell phone C. Virus D. Organic phosphates

Answers

Genetic material is the hereditary unit found in the cells of every living organism. Viruses are nonliving things that also have genetic material. Thus, option C is correct.

What are viruses?

Viruses are organisms that are living and nonliving as they reproduce when once inside the host cell and have the RNA or the DNA as the genetic material inside their capsids.

The protein shell of the virus includes one of the types of genetic material that infects the host DNA by taking control of the host machine to produce multiple copies.

Therefore, the virus is a non-living with genetic material.

Learn more about viruses here:

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which statement best describe the relationship between the products of photosynthesis and the reactants in cellars respiration

Answers

Answer:

Photosynthesis products serve as a chemical energy suppliers for reactants and cellular respiration.

Since photosynthesis creates oxygen and oxygen needed for cellular respiration in the production of carbon dioxide and energy, carbon dioxide is used to generate plant energy and oxygen.

Explanation:

Photosynthesis products produce chemical energy by reacting to cellular respiration. Photosynthesis products interact to extract ATP from cells in cellular breathing reactants.

Photosynthesis products inhibit the reactants in the presence of light in cellular breathing.

What is the primary source of energy that flows through food webs?

Group of answer choices

sun

herbivores

consumers

decomposers

Answers

Answer:

Sun

Explanation:

The sun sends out energy to plants then herbivores eat the plants

The sun
Explanation:
Trust me

Which sphere includes rocks ana minerals

Answers

Answer:

Geosphere includes rocks and minerals.

Explanation:

what color eye is this?

Answers

Answer:

haze/green

Explanation:

If thats ur eye it is SO pretty

lol mine r brown

A type of worm with many linked sections is a flatworm.

True or False

Answers

Answer:

False.

Explanation:

Flatworms are unsegmented.

If a dented pea plant is crossed with a heterozygous smooth plant, what will be the phenotypes of the offspring?

Answers

I attached the answer in a photo

How fast can you answer correct..? How fast can i give you brainliest and rank up? Explain Your answer
HELP

Answers

Answer:

D (but b on the map)

Explanation:

HURRY LAST QUESTION TEST DUE IN 5 MINUTES !!!!!!


Where are you most likely to find ocean water with high density? A. Near the polar regions B. Near the equator in the Pacific Ocean D. Mid latitudes in the pacific ocean​

Answers

Answer:

I would say the answer is A. I'm not 100% percent but that's what I would put.

Near the polar regions :)

What is the phenomenon that takes place at the level of the green leaves of the carrot

Answers

Explanation:

tttyyygftj that's all I have

When the genetic material found within an offspring is diverse, what type of reproduction is responsible?

a
Sexual reproduction, because the genetic material comes from both parents
b
Sexual reproduction, because the genetic material comes from one parent
c
Asexual reproduction, because the genetic material comes from both parents
d
Asexual reproduction, because the genetic material comes from one parent

Answers

Answer:

a

Explanation:

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1.
In which order is energy transferred through a food chain?
A. Sun → plants → animals
B. Sun animals → plants
C. plants - Sun animals
nlants animals - Sun
D

Answers

Answer:

It is A

since the energy source is the first thing you need to make the planet habitable, and in order for the animals to live, you need plants like trees to give air. so the cycle is Sun-Plant-Animal

Plz help its my last question i will give brainliest!!!!


Which of the following is true regarding enzymes?

Choose 1 answer:

Choose 1 answer:


(Choice A)

A


Enzymes can only be used once during a reaction.


(Choice B)

B


Enzymes are reusable.


(Choice C)

C


Enzymes are usually carbohydrates.


(Choice D)

D


Enzymes denature at their optimum temperatures.

Answers

Answer:

I believe the answer is B

Explanation:

1. Examples of a(n) include the skeletal system, respiratory
system, and circulatory system.

Answers

skulllungsheart

Explanation:

if that is what your asking for

Which factor is found in a scientific claim? endorsement by famous scientists data collection from only one facility similar results in multiple tests of the claim identical data across all tests of the claim

Answers

Answer:

similar results in multiple tests of the claim

Explanation:

e2020 told me so

Similar results in multiple tests of the claim are a factor found in a scientific claim.

What is a scientific claim?

The statements made regarding an issue in the field of science are referred to as a scientific claim. Scientific claims are different from any other form of a claim as they are made after a lot of research and are backed by data.

Science is basically a systemically done study of the world around us. People practising in the field of science are called scientists. They collect data, analyze it and based on this analysis they come to conclusions.

Thus a scientific claim is a statement made after coming to the conclusion after analyzing the data.

Even though, a scientific claim is made after thorough research, not every scientific claim is as reliable. The experimentation and analysis can be subject to various errors which can cause a faulty scientific claim.

Therefore, the factor present in a scientific claim would be similar results in multiple tests of the claim.

Read more about the scientific claims, here

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