Which of the following mutant Drosophila phenotypes resulted from a mutation in a pair-rule gene?
A) An embryo with half the normal number of body segments
B) An embryo that lacks several abdominal segments
C) An embryo without head segments
D) An embryo with antennae attached to the posterior
E) An embryo with a pair of legs instead of antennae attached to the head

Question

Quizplus · Accepted Answer

Pair-rule genes are essential for establishing the segmented body plan of Drosophila embryos. Mutations in these genes typically result in the loss of every other segment, leading to an embryo with half the normal number of body segments.

Which of the Following Mutant Drosophila Phenotypes Resulted from a Mutation