Colorblindness is a sex-linked recessive disorder. If the daughter of ...

Colorblindness is a sex-linked recessive disorder. If the daughter of a couple is colorblind, what are the two possible genotypes of her mother?

a. X^AX^A and X^AX^a

b. X^AX^A and X^aX^a

c. X^AX^a and X^aX^a

d. Cannot be determined

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Two alleles are the same

A. homozygous

B. heterozygous

C. co-dominant

D. dihybrid

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