Question

Punnet Square 6. Claud has hereditary rickets, an X-linked dominant disorder. If his partner does not have this

Answer 1

Answer:

a) the son will not be affected by rickets (0% chance)

b) the daughter will have rickets (100% chance)

Explanation:

Since only the father has rickets and it is a X-linked dominant trait, the mother has two normal X chromosomes. The X chromosome received from the mother by the son will not result in the rickets since the father will have contributed the Y chromosome and that does not have the gene for rickets. In case of the daughter, she will receive the defective X chromosome from her father, which will cause her to have the rickets disease.

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