red green color blindness in humans is inherited as an x linked recessive condit

Red-green color blindness in humans is inherited as an X-linked recessive condition. Consider reciprocal matings between a color-blind parent and a parent with normal color vision in which the dominant allele is identified as C and the recessive allele as c.

Mating I is CcÃ—cY.

Mating II is ccÃ—CY.

Part A

Determine the phenotypes and their proportions in progeny produced by mating I. Choose either 1, 2, 3, or 4.

1	12 color blind, 12 normal, with equal proportions of male and female progeny in each class.
2	14 color blind, 34 normal, with equal proportions of male and female progeny in each class.
3	12 color blind and 12 normal; all the colorblind individuals will be male and all the normal individuals will be female.
4	None of the above.

Part B

Determine the phenotypes and their proportions in progeny produced by mating II. Choose 1, 2, 3, or 4.

1	12 color blind, 12 normal, with equal proportions of male and female progeny in each class.
2	14 color blind, 34 normal, with equal proportions of male and female progeny in each class.
3	12 color blind and 12 normal; all the colorblind individuals will be male and all the normal individuals will be female.
4	None of the above.

red green color blindness in humans is inherited as an x linked recessive condit

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