In combination, the products of gap genes, pair-rule genes, and segmentation-polarity genes ________.
A) trigger the reorganization of the larval body into an adult body
B) define the segmented body plan of the embryo
C) set up the back-to-belly axis of the larval body
D) direct cell movements during differentiation

Question

Quizplus · Accepted Answer

The combination of gap genes, pair-rule genes, and segmentation-polarity genes define the segmented body plan of the embryo. Gap genes establish broad regions of the embryo, pair-rule genes divide the embryo into segments, and segmentation-polarity genes determine the identity and polarity of each segment.

In Combination, the Products of Gap Genes, Pair-Rule Genes, and Segmentation-Polarity