Question

what is the probability of a child becoming colourblind , having parents like:
a) mother is a carrier and father is also a carrier
b) mother affected and father carrier
c) father and mother both affected
d) father affected and mother is carrier​

Answer 1

Answer:

If the father is normal, he has genotype XNY . If the mother is colour blind, she is homozygous recessive, with genotype XnXn . Thus, all male children will inherit the Y chromosome from the father and the recessive Xn allele (colour blindness) from the mother. Thus they will all be colour blind

Explanation:

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Answer 2

Answer:

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