Healthy parents had a color blind son. Identify the genotypes of the son and mother.
| May 29, 2020 | Education
Since the parents are healthy, and the color blind gene is recessive linked to the X chromosome, the son “received” the color blind gene from the mother, which means the woman is heterozygous for the color blind gene.
Hence: mother – XDXd, son – XdY.
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