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

Multiple Choice

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