#Question id: 7171
#Unit 5. Developmental Biology
Following statements are regarding to the early development in sea urchin.
A. most cells of the 16-cell embryo, the large micromeres are autonomously specified.
B. large micromeres inherit maternal determinants that were deposited at the vegetal pole of the egg; these become incorporated into the large micromeres at the fourth cleavage.
C. The conditionally specified large micromeres are now able to produce paracrine and juxtacrine factors that autonomously specify the fates of their neighbors.
D. Large micromeres become skeletogenic mesenchyme cells that will leave the blastula epithelium, enter the blastocoel, migrate to particular positions along the blastocoel wall, and then differentiate into the larval skeleton.
Which of the following statement is false?
#Question id: 2844
#Unit 2. Cellular Organization
Microsatellite DNA is composed of very short tandemly repeated sequences of
#Question id: 2013
#Unit 4. Cell Communication and Cell Signaling
A patient undergoes a high level of mast cell degranulation, dilation of blood vessels, and acute drop in blood pressure. These symptoms could be caused by which of the following?
#Question id: 9616
#Unit 9. Diversity of Life Forms
Which mutation should least require realignment of homologous regions of a gene that is common to several related species?
#Question id: 1146
#Unit 4. Cell Communication and Cell Signaling
Which of the following general statement(s) about a G protein–coupled receptor is (are) TRUE?