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Stells [14]
3 years ago
15

a reessive allele on the x chromosome is responsible for red-green color blindness in humans. a woman with normal vision whose f

ather is color-blind marries a color-blind male. what is the probability that a son of this couple will be color-blind?Please draw the punnet square.

Biology
1 answer:
Ray Of Light [21]3 years ago
4 0

Answer:

50%

Explanation:

Let the allele for red-green color blindness be represented by c.

Normal vision woman whose father is color-blind will be X^CX^c

Color-blind male will be X^cY

X^CX^c   x   X^cY

Progeny: X^CX^c, X^CY, X^cX^c, X^cY (See the attached image)

<em>Out of the 2 male progeny, 1 is affected for color-blindness while the other is not affected. This gives a 50% probability that a son of the couple will be color-blind.</em>

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