Features that are similar in organisms that are not evolutionarily related are due to

A. chance alone.
B. similar selective pressures.
C. differing selective pressures.
D. directional mutation.


Answer: B

Biology & Microbiology

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An organism that is eukaryotic is by definition:a

is a protist b. is unicellular c. possesses a nucleus d. possesses organ systems e. belongs to domain Bacteria

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The cell cycle is monitored as each cell passes through checkpoints

a. true b. false

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Opportunistic infections typical of AIDS but rare otherwise include

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