1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mr Goodwill [35]
2 years ago
12

Colorblindness is an X-linked recessive trait. Samantha is colorblind and her husband, Rick, has normal vision. What is the prob

ability that they will have a colorblind son?
Biology
1 answer:
pav-90 [236]2 years ago
4 0

Considering the whole progeny, there are 50% of probabilities of having a colorblind son. Considering only boys, there are 100% chances of having a colorblind son.

<h3>What is color blindness?</h3>

Color-blindness is a disfunction characterized by an alteration in color perception.

This alteration might affect perception from only partial confusion and difficulties in distinguishing some tones of green and red, up to no chromatic distinction.

Color-blindness is an X-linked condition.

  • Women that are h0m0zyg0us recessive will be completely color-blinded (X⁺X⁺),

  • Heter0zyg0us woman has partial color-blindness (X⁺X⁻).

  • Men are or are not color-blinded (X⁺Y or X⁻Y).

<h3>Available data</h3>
  • color-blindness is an X-linked recessive condition
  • X⁻ represents the X chromosome carrying the color blindness allele.
  • The allele for color blindness is recessive to the normal form of the gene, X ⁺.
  • Samantha is colorblind.
  • Rick has normal vision.

⇒ If Samantha is color-blind, then her genotype is X⁻X⁻.

⇒ If Rick has normal vision, then his genotype is X⁺Y.

Cross: Samantha and Rick

Parentals)    X⁻X⁻     x      X⁺Y

Gametes)  X⁻    X⁻         X⁺    Y

Punnett square)           X⁻               X⁻

                         X⁺       X⁺X⁻           X⁺X⁻

                          Y        X⁻Y             X⁻Y

F1) 2/4 = 1/2 = 50% of the progeny is expected to be heter0zyg0us expressing partial-color blindness, X⁺X⁻.

     2/4 = 1/2 = 50% of the progeny is expected to be completely color-blinded, X⁺Y.

     100% of the girls are expected to be partial-color blinded, X⁺X⁻.

     100% of the boys are expected to be color blinded, X⁻Y.

Answer: You can express your answer in two ways,

  • 4/4 = 100% of probabilities of having a colorblind son (you are only considering boys in your answer).

             

  • 1/2 = 50% of chances of having a colorblind son among the whole progeny (this answer includes girls as well).

You ca learn more about color-blindness at

brainly.com/question/25621649

brainly.com/question/4299904

You might be interested in
What allows rotational movemonet
elena55 [62]
A ball and socket joint provides the greatest degree of movement among different kinds of joints including rotation, flexion, extension, abduction, and adduction. Hinge joint-This joint is said to be a very simple joint that allows movement only in one axis. It allows only two kinds of movements- flexion and extension.

Hope this helps and please mark me as brainlest and like
5 0
2 years ago
Why do the cells need to divide
sergey [27]

Answer:

Cells divide so living things can grow. When organisms grow, it isn't because cells are getting larger. Organisms grow because cells are dividing to produce more and more cells.

5 0
3 years ago
The chemical bonds of carbohydrates and lipids have high potential energy because:
gladu [14]
<span>Their electrons are far away from the nuclei of the atoms. Transfer high-energy electrons from NADH and FADH2 to protein complexes of the electron transport chain. </span>
5 0
3 years ago
If a molecule’s concentration outside the cell is higher than it is inside the cell , that solution is??
slavikrds [6]

Them the solution is hypertonic. This means that the water within the cell would exit it and go outside and the cell would shrink.

6 0
3 years ago
Describe how Leeuwenhoek's discovery of life in a drop of water led to the future scientist to the germ theory of disease?
Alecsey [184]

Answer: germ theory

Explanation: Germ theory of disease is a theory in biology. It says that small organisms (called germs), also known as microbes, cause diseases. Most, but not all diseases are infectious diseases. The germ theory states that small organisms cause a reaction in the body of those who are infected. The body's reaction to infection is called a disease.

Reference: Wikipedia

8 0
2 years ago
Other questions:
  • 5. Which of the two cell reproduction processes that we learned about in this lesson is the one that is necessary for sexual rep
    15·1 answer
  • Which answer correctly compares the Krebs cycle and the electron transport chain? (2 points)
    10·1 answer
  • Which of the following eras occurred first?
    15·2 answers
  • How many cells does the human body have?
    13·1 answer
  • All but one factor plays a part in water movement in and out of the cell. That is A) the presence of sodium potassium pumps. B)
    15·2 answers
  • Gregory wanted to know what type of food spiders prefer to eat, so he performed two different investigations.
    11·1 answer
  • The reason for the length of day and night is the diurnal rotation because the sun cannot illuminate the whole earth at once whe
    13·1 answer
  • What organelle's function is to CARRY material to export out of the cell?
    8·1 answer
  • Which example best demonstrates a threat to biodiversity via habitat fragmentation?
    10·1 answer
  • List three things that can bring life to a barren island
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!