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
Elena L [17]
3 years ago
9

A couple has three children, two without sickle cell anemia and one with sickle cell anemia. The mother has sickle cell anemia a

s well, while the father does not.
Make and defend a claim as to how this couple could have children with and without sickle cell anemia.
Biology
1 answer:
bezimeni [28]3 years ago
6 0

Answer:

Explanation:

The sickle cell allele is recessive. Hence, in order for any child of the couple to have sickle cell anemia, such a child will have to inherit an affected allele each from the two parents. This means that both the father and the mother must have affected alleles in their genotypes. In other words, two sickle cell alleles are required for the abnormality to manifest.

Let us assume that the sickle cell allele is represented by S and the normal allele is represented by A.

Now, it is established that the mother has sickle cell anemia, her genotype would be SS. The father does not have sickle cell, his genotype can either be AA or AS.

Assuming the genotype of the father is AA:

          SS   x   AA

      AS   AS   AS   AS

<em>All the children would be normal in this case.</em>

Assuming that the genotype of the father is AS

           SS    x    AS

      AS   SS   AS   SS

<em>50% of the children would have sickle cell while the remaining 50% would be normal.</em>

<u>Therefore, in order to produce children with sickle cell, the father has to be AS, otherwise, he has to be AA.</u>

<u><em /></u>

You might be interested in
When you drop a tissue, it falls very slowly to the ground. What makes it fall
professor190 [17]

Answer:

C

Explanation:

It makes a slower reaction

6 0
2 years ago
Read 2 more answers
Describes the path of a drop of blood leaving the human heart?
soldier1979 [14.2K]

Answer:

There are two paths of a drop of blood leaving the human heart. First, the deoxygenated blood leaves the heart and second, oxygenated blood leaves the heart,

Explanation:

Deoxygenated blood leaves the heart through an artery called pulmonary artery which take this blood to the lungs. After that, oxygenated blood carries from lungs to the heart through pulmonary vein. The oxygenated blood in the heart leaves the heart through aorta and distribute this blood in all parts of the body.

3 0
3 years ago
The S phase in the cell cycle is the
BARSIC [14]
It is the part of the cell cycle in which the dna is replicated! vote me brainliest please :) ❤️
4 0
3 years ago
Which of the following is an abiotic factor that shapes a marine ecosystem? a. fish c. depth b. kelp d. coral
olasank [31]
Answer: c depth hope it helps!
5 0
3 years ago
Which types of proteins help defend the body against foreign agents like bacteria?
horrorfan [7]
Antibodies- I hope that helps :)
3 0
2 years ago
Other questions:
  • Is a kind of cell division that produces haploid cells with?
    7·1 answer
  • How do bears get their nutrients and energy they need
    6·2 answers
  • Although triple-x human females typically have normal offspring, what kinds of gametes, with respect to the x chromosomes, would
    12·1 answer
  • Which statement describes Mendels hypotheses regarding gametes
    12·1 answer
  • An insect that transmits disease is called a:
    8·1 answer
  • How does Propionibacterium acnes cause acne in humans?
    11·1 answer
  • What happens to an enzyme’s structure as it exceeds the typical human body temperature?
    8·1 answer
  • Scientists can find new discoveries that change their current understanding of scientific knowledge.
    9·1 answer
  • Dna composition in mitiosis does it get half in daughter cell
    14·1 answer
  • Which is responsible for the granular appearance of cells in the stratum granulosum?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!