George is partially colorblind yet his sister is not, but her sons are partially colorblind. These family traits are best described by which of the following statements?

Question

Quizplus · Accepted Answer

Partial color blindness is a sex-linked trait that mostly affects males, which means the gene responsible for it is located on the X chromosome. Since George is partially colorblind, he must have inherited the gene from his mother, who is likely a carrier. His sister, who is not colorblind, likely inherited a normal X chromosome from their mother. However, since her sons are partially colorblind, this means they inherited the colorblindness gene from their mother.

George Is Partially Colorblind Yet His Sister Is Not, but Her