An X-linked recessive gene (c) produces red-green color blindness. A normal woman whose father was color blind
marries a color-blind man.
(a) What are the possible genotypes for the mother of the color-blind man?
(b) What are the possible genotypes for the father of the color-blind man?
(c) What are the chances that the first son will be color blind?
(d) What are the chances that the first daughter will be color blind? What will be an ideal response?
ANSWER: (a) Cc or cc
(b) CY or cY
(c) 1/2
(d) 1/2
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Fill in the blank(s) with the appropriate word(s).
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