Which situation is most likely to decrease genetic variation?

A. directional selection
B. mutation
C. stabilizing selection
D. diversifying selection


C. stabilizing selection

Biology & Microbiology

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True or False: Song in White-Crowned Sparrows is learned by imprinting, and even if deprived of hearing the adult male song during the sensitive period, the young males will always sing the father's song

A. true B. false

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Bacterial pneumonia in children is most commonly caused by:

a. M. pneumoniae. b. Chlamydia pneumonia. c. parainfluenza virus. d. Staphylococcus aureus.

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About 4 million years ago, ________ left the African forest to dwell in the grasslands.

A) Dryopithecus B) Aegyptopithecus C) Australopithecus D) Propliopithecus

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Light rays are refracted (bent) when they cross the interface between materials with different refractive indices.

Answer the following statement true (T) or false (F)

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