Question

Which best explains why males have a greater probability of being color blind than females?

A. Males only have to inherit the allele on the Y chromosome to be color blind.
B. Males only have to inherit the color blindness allele once to show the trait.
C. Males have to inherit two copies of the color blindness allele to show the trait.
D. Males have to inherit the allele on two X chromosomes to be color blind.

Answer 1

Answer: Since it's passed down on the X chromosome, red-green color blindness is more common in men. This is because: Males have only 1 X chromosome, from their mother. If that X chromosome has the gene for red-green color blindness (instead of a normal X chromosome), they will have red-green color blindness.

Step-by-step explanation: