During Drosophila Development, There Is a Regulatory Cascade of Gene

Multiple Choice

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.