Genetic drift
a. leads to a loss of diversity in a population.
b. requires small populations.
c. occurs in populations with the founder effect.
d. occurs following a bottleneck.
e. fits all of these descriptions.
Answer: e
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When the life cycle of a disease agent is dependent on a single host species, the pathogen can be eradicated
Indicate whether the statement is true or false.
Biological evolution occurs in ____ when specific processes cause genomes of organisms to differ
from their ancestors
a. individuals b. populations c. communities d. phenotypes e. sub-species
Pulmonary edema describes a condition where the uptake of oxygen and unloading of carbon dioxide is reduced as a consequence of a(n)
A) decrease in the partial pressure of carbon dioxide in the alveolus. B) increase in the partial pressure of oxygen in the blood. C) thickening of the diffusion barrier by fluid accumulation in the pulmonary blood. D) thickening of the diffusion barrier by fluid accumulation in the alveoli. E) decrease in the partial pressure of oxygen in the alveolus.
Which complementary base pairings occur between DNA and RNA?
A) A to T and C to G B) T to C and A to G C) G to C and A to U D) C to U and A to T