In the position effect variegation of red and white eye color in Drosophila, eyes are produced
A)one red and one white.
B)red or white depending on which gene is dominant.
C)with every other eye facet red or white.
D)with varying sizes and positions of red and white patches.

Question

Quizplus · Accepted Answer

In the position effect variegation, the expression of eye pigments is dependent on the position of the gene within the chromatin. This results in varying sizes and positions of red and white patches in the eye of the Drosophila. Therefore, choice D is the best answer. Choices A, B, and C are incorrect because they do not accurately describe the phenomenon of position effect variegation.

In the Position Effect Variegation of Red and White Eye