Genetic drift is a process that has a greater effect on populations that
(a) are large.
(b) are small.
(c) are not affected by mutation.
(d) do not go through bottlenecks.
(b) are small.
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DNA duplication occurs during
a. interphase. b. prophase I. c. prophase II. d. interkinesis.
After a rapid change in climate, one population of bird quickly adapts to the change, but others in the area do not. What could you conclude about the quickly adapting population?
A) They had a greater need to evolve than the other population. B) They already had some alleles in their genome that were adaptive in the new environment. C) They reproduced more slowly than the non-adapting population. D) They had a higher rate of mutation than the other population.
Mitochondrial and chloroplast genomes typically
A) are composed of primarily noncoding DNA. B) encode all of the proteins needed for aerobic respiration and photosynthesis, respectively. C) encode for ribosomal and transfer RNAs. D) encode some of the proteins needed for aerobic respiration and photosynthesis, respectively. E) encode some of the proteins needed for aerobic respiration and photosynthesis, respectively, as well as ribosomal and transfer RNA.
What is the name of the chitin-reinforced bristles that protrude outward from the body wall and are used by most segmented worms to anchor themselves against a substrate?
a. clitella b. septa c. parapodia d. setae