Segmentation genes in Drosophila act in which of the following orders?
A) pair- rule, segment polarity, gap genes
B) pair- rule, segment polarity, Hox genes
C) pair- rule, transdeterminal, gap genes
D) gap, pair- rule, segment polarity
E) segmental, helical, spherical

Question

Quizplus · Accepted Answer

The correct order of action for segmentation genes in Drosophila is: gap genes, pair-rule genes, and then segment polarity genes. Gap genes define broad areas, pair-rule genes refine these areas into segments, and segment polarity genes further define the anterior-posterior axis within each segment.

Segmentation Genes in Drosophila Act in Which of the Following