At the genetic level, evolution is
A. a change in fitness over time.
B. a population change over time.
C. a change in the frequency of an allele or
genotype over time.
D. an increase in fitness over time.
E. natural selection.
C
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A codon is composed of how many bases?
A. one B. two C. three D. four E. 64
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Indicate whether the statement is true or false.
During breakdown of fatty acids, carbons are removed ________ at a time with each turn of the cycle, and two carbon units are released as ________.
A. one; methane B. two; acetyl-CoA C. two; ethanol D. one; carbon dioxide
_____ are close interactions between species that have evolved over long periods of time. When these interactions enhance the reproduction and population growth of both species, they are called _____
A. Symbioses; mutualisms B. Mutualisms; symbioses C. Symbioses; antagonisms D. Antagonisms; symbioses E. Antagonisms; mutualisms F. Mutualisms; antagonisms