Q1. A geneticist is examining the culture of fruit flies and discovers single female with strange spots on her legs. The new mutation is named melanotic. While a female melanotic fly is crossed with a normal male, the progeny are produced: 123 normal females, 125 melanotic females, and 124 normal males. In following crosses with normal males, melanotic females are frequently obtained, but never any melanotic males. Give a probable explanation for the inheritance of the melanotic mutation.

Q2. A 19 year old model for Glamour magazine tripped over an extension cord causing injury to her epidermis. She is afraid injury will leave a scar. Based on your information of regeneration, what will you say to the patient?