This is a clear demonstration of sex-linked inheritance. The eye color gene is located on the X chromosome (one of the sex determining chromosomes of Drosophila). White eye color is recessive. When a red eyed male mates with white eyed females, their daughters will have red eyes, but their sons will have white eyes.
Are fruit flies autosomal?
Fruit flies have four pairs of chromosomes, three pairs of autosomes and one pair of sex chromosomes (Fig. 1).
Are red eyes dominant in fruit flies?
A white-eyed female fruit fly is crossed with a red-eyed male. Red eyes are dominant, and X-linked. What are the expected phenotypes of the offspring? All of the females will have red eyes; half of the males will have red eyes, and half of the males will have white eyes.
What body color is dominant in fruit flies?
Question: In fruit flies, gray body color is dominant over black body color. White eyes are dominant over red eyes.
Are fruit flies harmful?
There are hidden dangers that most people are unaware of, that make these tiny little fruit flies a human health hazard. Dangerous bacteria and other germs can stick to their hairy bodies, that can get on our food or hands and spread illnesses that cause health problems, especially diarrhea.
What does a female fruit fly need for white eyes?
1. In fruit flies, the gene for white eyes is sex-linked recessive. (R) is red and (r) is white. Cross a white- eyed female with a normal red-eyed male.