Question

A color-blind man marries a homozygous normal
woman, and after four joyful years of marriage they have
two children. Unfortunately, both children have Tumer
syndrome, although one has normal vision and one is
color blind. The type of color blindness involved is a sex-
linked recessive trait.
a. For the color-blind child, did nondisjunction occur in
the mother or the father? Explain your answer.
For the child with normal vision, in which parent did
nondisjunction occur? Explain your answer.​

Answer 1

Answer:

Nondisjunction means nonseparation: of either homologous chromosome in meiosis I or of sister chromatids in meiosis II. In both the cases abnormal gametes will be formed and after fertilisation, there will be trisomy or monosomy of chromosome.

hope it will help you

Answer 2

Explanation:

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