During Drosophila development, there is a regulatory cascade of gene activation. The proper sequence for this cascade is
A) bicoid, pair- rule genes, gap genes, and segment polarity genes.
B) bicoid, segment- polarity genes, gap genes, and pair- rule genes.
C) bicoid, gap genes, segment polarity genes, and pair- rule genes.
D) bicoid, gap genes, pair- rule genes, and segment polarity genes.

Question

Quizplus · Accepted Answer

The correct sequence in Drosophila development starts with maternal effect genes like bicoid, followed by gap genes that define broad areas, then pair-rule genes that refine the pattern into segments, and finally segment polarity genes that detail the anterior-posterior axis within each segment.

During Drosophila Development, There Is a Regulatory Cascade of Gene