When evolutionary biologists study the process of natural selection they focus on:

a. what drives mutations.
b. how some trait of interest changes over time.
c. how some trait of interest remains constant over time.
d. A and B.
e. B and C.


E

Biology & Microbiology

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An individual's ____ determines its observable ____

a. phenotype; genotype b. genotype; phenotype c. gene location; allele d. heterozygote; homozygote e. homozygote; heterozygote

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In a scientific experiment, the group that does not receive the experimental treatment is called the placebo group

a. true b. false

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A) birds B) butterflies C) amphibians D) trees

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