Morgan demonstrated that white eye color in Drosophila is carried recessively on the X chromosome (recall that females are XX and males are XY).Which of the following best describes the offspring of a heterozygous (carrier)female and a white-eyed male?
A) Half of the daughters have red eyes and all sons have red eyes.
B) All daughters have white eyes and half of the sons have red eyes.
C) All daughters have red eyes and all sons have white eyes.
D) Half of the daughters have white eyes and all sons have white eyes.
E) Half of the daughters and sons have white eyes.

Question

Quizplus · Accepted Answer

A heterozygous female (X^RX^r) crossed with a white-eyed male (X^rY) results in half of the daughters (X^rX^r) and half of the sons (X^rY) having white eyes.

Morgan Demonstrated That White Eye Color in Drosophila Is Carried