Even though red-green color blindness is a recessive trait, can a female have red-green color blindness? explain your answer, including the genotype of a female with red-green color blindness.

A woman may have green-red color blindness when she has two recessive alleles (xx).

Explanation:

Green-red color blindness is caused by the absence of sensory cells in the retina (responsible for the sense of sight), or by anomalies that are considered to be of genetic origin. Color blindness affects more men than women, because the color blindness gene is linked to the X chromosome, and men have only one X (XY), while women are XX.

Because they have two X chromosomes, the probability of women being colorblind is minimal, but it is possible if the chromosomes are recessive (xx).

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