The process by which a single primary RNA transcript is used to make multiple proteins is called:
A. combinatorial control.
B. alternative splicing.
C. regulatory splicing.
D. translational control.
E. polymeration control.
B
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To be most sensitive to a repellant, a methyl-accepting chemotaxis protein must be ________ methylated to initiate a ________
A) fully / run B) fully / tumble C) not / run D) not / tumble
Hawaiian fruit flies provide an example of which of the following?
a. founder effects b. genetic drift c. adaptive radiation d. founder effects and genetic drift e. founder effects, genetic drift and adaptive radiation
At the time life first evolved on earth:
a) there was more oxygen and less methane in the atmosphere than there is today. b) there was less oxygen and more methane in the atmosphere than there is today. c) there was less oxygen and less methane in the atmosphere than there is today. d) the amounts of oxygen and methane in the atmosphere were the same as today. e) None of the above is correct.
A bacterial cell must have ________ in order to transfer portions of its chromosome to another cell.
A. growth enhancement genes B. an F factor C. a high frequency of combination plasmid D. a recombination factor E. All of the answers are correct.