Pepsin is an enzyme that functions in the
stomach. Its optimum pH would be
a. between 1 and 2.
b. between 3 and 4.
c. above 6.
d. between 5 and 7.5.
e. above 8.5.
A
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Crossing over
a. generally results in binary fission. b. involves centrioles. c. involves breakages and exchanges between sister chromatids. d. results in new combinations of alleles being channeled into the daughter cells. e. does all of these.
what three biochemical properties distinguish endotoxins?
What will be an ideal response?
The probability of crossover between two linked genes is greatest when the genes are farthest apart on the same chromosome.
a. true b. false
Retroviruses make __________ by the process of __________
a. RNA copies of DNA; reverse transcription b. DNA copies of RNA; reverse transcription c. genetic probes; Southern blotting d. genetic probes; Northern blotting e. telomerase; mutagenesis