Which of the following is not true of the kinetic proofreading reaction of bacterial RNA polymerase?
A. rNTP is the product.
B. It occurs when the enzyme stalls after incorporating a mismatched base.
C. The type of reaction is pyrophosphorolysis.
D. Water is the nucleophile.
E. Pyrophosphate is a reactant.
D
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Which of these bones is largest?
a. malleus b. incus c. vomer d. stapes
A tiny loop of double-stranded DNA describes a
a. bacterium. b. DNA ligase. c. plasmid. d. antibiotic.
all of life is related through common ancestry, accounting for the --- of life
Fill in the blank(s) with the appropriate word(s).
If the curve shifts to the left or to the right, there is no gene flow, and the population size consequently increases over successive generations, then which of these is (are) probably occurring?
1. immigration or emigration 2. directional selection 3. adaptation 4. genetic drift 5. disruptive selection A) 1 only B) 4 only C) 2 and 3 D) 4 and 5 E) 1, 2, and 3