What is common to gap genes, segment- polarity genes, and homeotic genes?
A) They are unique to Drosophila embryos.
B) They act independently of one another.
C) They can be activated at any time during development.
D) They code for transcription regulatory factors.

Question

Quizplus · Accepted Answer

All three types of genes (gap genes, segment-polarity genes, and homeotic genes) code for transcription regulatory factors. Gap genes and segment-polarity genes are involved in establishing the initial segmentation pattern in the embryo, while homeotic genes determine the identity of each segment and the structures that develop from them. This is true not only in Drosophila, but also in other organisms that undergo similar processes of segmentation and body patterning during development.

What Is Common to Gap Genes, Segment- Polarity Genes, and Homeotic