When examining the complete genome sequence of E. coli 0157:H7, a researcher notes that only one of two possible codons coding for lysine is observed in the genome. This is likely the result of:
a. mutational bias.
b. this gene being highly expressed.
c. unequal abundances of transfer RNA.
d. selection against slip-stand mutations.
e. All of the above.
E
You might also like to view...
In DNA replication there are leading and lagging strands, because
A) DNA replication is conservative and a completely new DNA molecule must be made. B) DNA replication is semiconservative and each strand is copied simultaneously in opposite directions. C) the strands of DNA are parallel and are copied in the same direction simultaneously. D) one strand of DNA is copied faster than the other.
What structure in most ray-finned fish is responsible for buoyancy control?
a. Gas gland b. Blubber c. Squaline d. Swim bladder
Spicy is not a basic taste category identified in humans
1.True 2.False
The tailbone of humans is an example of:
a. a developing feature. b. an accidental feature. c. a vestigial feature. d. an example of the great chain of being. e. none of these