Explain why all male children of parent 1 (XY) and parent 2 (XX) are red-green color blind.

You're on a roll — Here's the explanation for why all male children of parent 1 and parent 2 are red-green color blind: 1. Determine parental genotypes: Parent 1 is a male with normal color vision, so his genotype is X^B Y. Parent 2 is a female with red-green color blindness, so her genotype is X^b X^b. 2. Inheritance in males: Male children inherit their Y chromosome from their father (Parent 1) and their X chromosome from their mother (Parent 2). 3. Allele passed from mother: Since Parent 2 has the genotype X^b X^b, she can only pass on the X^b allele to her sons. 4. Son's genotype and phenotype: Therefore, all male children will have the genotype X^b Y. As males only have one X chromosome, they will express the red-green color blindness trait. This means the completed explanation is: All male children receive the Y chromosome from the father and the X^b chromosome from the mother. Therefore, all sons have the genotype X^b Y, which makes them red-green colour blind. Drop the next question.