Multiple Choice
In vulval development in Caenorhabditis elegans (a soil nematode) , the progenitor cell nearest to the anchor cell is exposed to the highest concentration of epidermal growth factor and activation of its EGF receptor promotes type 1 cell differentiation. The type 1 cell then prevents type 1 differentiation in adjacent progenitor cells, a mechanism called:
A) lateral inhibition.
B) hierarchical control.
C) combinatorial control.
D) downstream element inhibition.
E) loss-of-function mutation.
Correct Answer:

Verified
Correct Answer:
Verified
Q85: Following implantation, the multiplying cells of the
Q86: A IuIation in a receptor ligand-binding domain
Q87: Which of the following CORRECTLY orders the
Q88: Gap genes:<br>A)control the differentiation of alternating segments
Q89: A new mutation is discovered in Drosophila
Q91: Bicoid _ <i>caudal</i> mRNA translation.<br>A)promotes<br>B)inhibits<br>C)does not affect
Q92: During the development of the vulva in
Q93: Signal transduction in development is often amplified
Q94: When the Pax6 gene from a mouse
Q95: The fertilized egg is also called a(n):<br>A)zygote.<br>B)blastocyst.<br>C)gastrula.<br>D)morula.<br>E)ectoderm.