What is the function of the MutS protein in methyl-directed mismatch repair?
A. To excise the mismatched base pair.
B. To find mismatches.
C. To directly bind the DNA polymerase.
D. To make a cut in the nonmethylated DNA strand.
E. To digest the nonmethylated DNA strand.
B. To find mismatches.
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Given that full sunlight has an intensity of approximately 10,000 ft-c, is photosynthesis in the field generally limited by light?
a. Yes b. No
Possible gamete genotypes produced by an individual of genotype PpDd are
a. Pp and Dd. b. all PpDd. c. PD and pd. d. PD, Pd, pD, and pd.
The movement of water through a membrane is dependent on
a. the concentration of solute. b. channel proteins. c. the extent of packing of the phospholipids. d. active transport. e. endocytosis.
What is the function of the low temperature second step in PCR (polymerase chain reaction)?
A) Activation of the DNA polymerase. B) Allowing primers to bind complementary sequences. C) Facilitate DNA synthesis. D) Deactivate DNA polymerase to pause synthesis. E) Facilitate the base pairing of deoxyribonucleotide triphosphates.