In the Roundworm Caenorhabditis Elegans, Development of the Vulva Begins

Multiple Choice

In the roundworm Caenorhabditis elegans, development of the vulva begins when the _____ cell secretes _____, which then bind(s) to _____ on a(n) _____ cell.

A) progenitor; EGF; the EGF receptor; anchor
B) progenitor; transcription factors; cis-regulatory regions; anchor
C) anchor; EGF; the EGF receptor; progenitor
D) anchor; transcription factors; cis-regulatory regions; progenitor
E) type 1; EGF; the EGF receptor; type 2