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Red -green color blindness is an x linked recessive disorder . Since normal vision is dominant, it is typically represented as x8. If a normal female wants to have children with a color blind now what is the probability of having a son who is colorblind? A daughter who is colorblind?A daughter who is a carrier ? In addition determine the genotypes of the two parents.

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Answer:

          x         y

x8     x8x     x8y

x8      x8x     x8y

The results of the punnet square show that:

They will not have a son who will be colour blind.

They will not have a daughter who is colour blind.

All the daughters born will be carriers of red- green colour blindness.

The genotype of the two parents will be:

Genotype of mother: x8,x8

Genotype of father: x, Y

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