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Question: 1 6marks in humans albinism is caused by a recessive...

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1. (6marks) In humans, albinism is caused by a recessive allele (a) while normal pigmentation is caused by the dominant allele (A).
a) If two pigmented parents have an albino child, what must the genotypes of the parents be?
b) What is the probability that if they have another child, that child will be albino?
c) What is the probability that the next two children are albinos?
d) What is the probability that they have one albino and one pigmented child? Be careful.
e) If these parents have dizygotic twins, what is the probability that both twins will have the
same pigmentation? Again, be careful.
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