Which feature, if changed, would NOT abolish M13's utility as a cloning vector?
A) ssDNA genome becoming a dsDNA genome
B) loss of genes that make coat proteins
C) replacing the segment of non-coding DNA in its genome with an indispensible gene
D) switch from lysogenic to lytic lifestyle
Answer: A
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The rate differences between molecular clocks are due largely to differences in _____. Thus, the extreme case of a fast molecular clock is derived from a _____
A. the intensity of selection; histone proteins B. the size of the molecule; pseudogenes C. the intensity of selection; pseudogene D. the size of the molecule; histone proteins E. none of these
The antibody IgE directly triggers _______.
What will be an ideal response?
Inoculating loops are generally sterilized using
A) moist heat. B) incineration. C) chemicals. D) filtration.
Fungi are at least ________ million years old.
A. 400 B. 1 C. 50 D. 100 E. 25