Gene flow through migration ________
A) has no effect on allele frequencies of populations
B) can go only in one direction
C) may have the largest impact on small populations, such as those on islands
D) maintains the Hardy-Weinberg equilibrium
C
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The presence of a group of antigens that determine blood type is an example of a(n) ____________
A. semilethal allele B. sex-linked trait C. multiple allele system D. incomplete dominance
What explains the coloration of giant kelp?
A. It facilitates absorption of the blue-green light prevalent in their environment. B. It facilitates absorption of the brown light prevalent in their environment. C. It warns grazers of their toxic properties. D. It camouflages them from grazers. E. It is the result of waste products stored in the tissues.
A hydrogen bond between the amino acid side groups (R groups) from two different polypeptide
chains in a multichain protein would be considered part of the ____ structure of the protein.
a. primary b. secondary c. tertiary d. quaternary e. linear
The placement of prokaryotes into major clades within the domains Archaea and Bacteria has been based on __________.
a. molecular comparisons b. fossil records of prokaryotes that have been recently discovered c. Gram stain results and colony characteristics when grown on solid media d. shape and motility e. nutritional modes and ecology