A phage
a. can be found in all living organisms.
b. is specific to a particular organism.
c. is found in mammals.
d. is specific for bacteria.
e. is specific for vertebrates.
D
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New World monkeys evolved approximately 30 million years ago. These animals are easy to identify because they
A. have opposable thumbs and binocular vision. B. have prehensile tails and hair. C. have protruding noses and prehensile tails. D. have flattened noses and prehensile tails. E. have opposable thumbs and protruding noses.
In crosses involving complete dominance, the F2 genotypic ratio is 1:2:1 and is expressed as a phenotypic
____________________ ratio (express as x:x). Fill in the blank(s) with the appropriate word(s).
It is hypothesized that the high diversity of rock-dwelling species within the cichlids is due to:
a. allopolyploidy. b. poor water quality. c. polyploidy coloration. d. disruptive sexual selection. e. macroevolution
How can it be determined whether a mutant that constitutively expresses the lac genes has a mutation that inactivates the repressor or a mutation in the operator?
What will be an ideal response?