Wild type fruit flies have red eyes.A white-eyed female fly is crossed with a red-eyed male fly.All of the females from the cross are red-eyed, and all of the males are white-eyed.What type of inheritance pattern is this?

Question

Quizplus · Accepted Answer

This inheritance pattern is indicative of sex-linked recessive inheritance, where the white-eye trait is carried on the X chromosome. Since males only have one X chromosome, they will express the trait if they inherit the recessive allele from their mother (who is a carrier of the trait). Females, on the other hand, would need to inherit the recessive allele from both parents in order to express the trait since they have two X chromosomes.

Wild Type Fruit Flies Have Red Eyes