Suppose there was a mutation in the segment-polarity genes of Drosophila. What do you suppose might be the outcome?
A) Several segments of the embryo will be missing.
B) Every other segment of the embryo will be missing.
C) Legs will appear in the place of antennae.
D) Antennae will appear in a different part of their usual segment.

Question

Quizplus · Accepted Answer

The segment-polarity genes in Drosophila are involved in the development of the anterior-posterior axis of each segment. A mutation in these genes could result in the incorrect placement of structures within the segment, such as antennae appearing in a different part of their usual segment. Choices A and B are unlikely since the segment-polarity genes are responsible for the patterning of individual segments rather than their formation. Choice C is not directly related to the function of segment-polarity genes.

Suppose There Was a Mutation in the Segment-Polarity Genes of Drosophila