Multiple Choice
Which of the following is an assumption used in the molecular clock approach?
A) Nucleotide changes accumulate in a sequence in proportion to time.
B) Nucleotide changes are generally NOT transferred to progeny.
C) Nucleotide changes are NOT random.
D) Nucleotide changes are subject to intense selective pressure.
Correct Answer:
Verified
Correct Answer:
Verified
Q68: Horizontal gene transfer is one plausible explanation
Q69: The atmosphere of primitive Earth is usually
Q70: It is believed that phototrophy arose approximately
Q71: Molecular phylogeny and rRNA analysis provided the
Q72: You are studying 12 new isolates from
Q73: What characteristics make a gene a good
Q75: Carl Woese was an important figure in
Q76: _ formed the semipermeable membrane-like surfaces for
Q77: At present there are four phyla in
Q78: Microorganisms were probably restricted to the oceans