Question

Red-green color blindness is caused by an X-linked recessive gene. Which of these statements best predicts the possible offspring of a mother that is an unaffected carrier of the gene that causes red-green color blindness and a father with normal color vision?

Answer 1

Sex linkage is a phenotypic expression where certain traits are expressed together with the sex gene. They are said to be linked to the sex genes. These include, Colour blindness, hemophilia among other traits. In this case if the  mother is a carier (XcXC) and the father who is normal (XcY). This means the offsprings will be a carier daughter ,normal daughter, normal son and a color blind son.