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Agata [3.3K]
3 years ago
13

If two people with sickle cell trait have children, what is thechance that a child will have normal RBCs in both high-and low-ox

ygen environments? What is the chance that a child will have sickle cell disease? Write the possible genotypes in the Punnettsquare.

Biology
1 answer:
Vanyuwa [196]3 years ago
4 0

Answer:

See the answer below

Explanation:

<em>The chance that a child from two people with sickle cell trait will have normal RBCs remains the same irrespective of the amount of oxygen in the environment.</em> From the cross:

                  AS    x    AS

            AA    AS    AS    SS

Hence, the chance of having a child with normal RBCs in both high and low-oxygen environments is 1/4 or 25%.

The chance that a child will have sickle cell disease is also 1/4   or 25%.

The possible genotypes in a Punnet's square can be seen in the attached image

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