Which one of the following best describes the difference between artificial and natural selection?
a) Charles Darwin understood natural selection but was unaware of artificial selection in his time.
b) Natural selection's effectiveness is limited by physiological and developmental constraints; artificial selection's effectiveness is free of these constraints.
c) Artificial selection has produced many unwanted genotypes; natural selection has not.
d) Natural selection works on all species; artificial selection will only work on lab-reared species.
e) Natural selection can act without the input of humans; artificial selection requires some human input.
Ans: e) Natural selection can act without the input of humans; artificial selection requires some human input.
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