François Jacob and Jacques Monod discovered ________
A) a mechanism for how proteins regulate gene activity
B) the degree of genetic similarity between humans and chimpanzees
C) the Hox cluster of homeotic genes
D) evolutionary changes in the timing and rate of developmental processes
E) the parallel between the order of regulatory genes on a chromosome and the location in the embryo where these genes are expressed
A
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Proteins consist of
(a) monosaccharides linked in chains. (b) amino acid units. (c) polysaccharide units. (d) condensed fatty acids.
The fluid that covers the brain and spinal cord is ____
a. part of the meninges b. part of a rapid type of nerve conduction c. involved in reflex actions d. involved in the "jumping" of impulses e. called cerebrospinal fluid
The pressure needed to stop osmosis is:
What will be an ideal response?
At __________, the fusion of two gametes produces
a __________. Fill in the blank(s) with the appropriate word(s).