In early ancestors of the modern giraffe, longer necks allowed animals to reach higher tree branches as food. This would lead to ________ in the ancestral giraffe population.
A. disruptive selection
B. sexual selection
C. genetic drift
D. directional selection
E. stabilizing selection
Answer: D
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For acid rainwater, which has a pH as low as 3.0, which of the following is true?
a. [H+] < [OH?] b. [H+] = [OH?] c. [H+] = 0 d. [OH?] = 0 e. [H+] > [OH?]
Which of the following characteristics do all plants share?
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Which of the following are not sub-compartments of the nucleus?
a. Clustered DNA replication sites b. Lipid droplets c. PML bodies d. Speckles enriched in RNA splicing components