Imagine two species of birds with similar beak sizes and diets. Where the two species are allopatric, we would expect that their beak sizes
A. should be more similar than when sympatric.
B. should be more different than when sympatric.
C. should be smaller than when sympatric.
D. should be larger than when sympatric.
Answer: A
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Helicase ____
a. proofreads the newly synthesized DNA b. relieves over-twisting ahead of the DNA replication fork c. rewinds the newly synthesized DNA strands into a double-stranded helix d. unwinds the double-stranded DNA helix e. binds DNA polymerase to the template strand
Which discipline is most directly applicable to most pharmaceutical drug trials?
a. genomics b. metabolomics c. proteomics d. systems biology
Which immune system protects the body from its own cancerous cells?
A) cell-mediated immune system B) antibody-mediated immune system C) enzyme immune system D) inflammatory immune system
The three domain system arose when scientists grouped organisms according to how long they have been
a. alive in their present forms b. going extinct c. evolving independently d. using DNA to store information