What is the evidence that genes are involved in a white-crowned sparrow learning to sing?
A. If the sparrows are deafened after learning to sing, they will sing abnormally as adults.
B. If they do not hear singing from other white-crowned sparrows, they will eventually learn to sing normally.
C. If they hear singing from both white-crowned sparrows and other species of sparrows, they will sing abnormally.
D. If they do not hear singing from other white-crowned sparrows, they will sing, but abnormally.
E. If they do not hear singing from other white-crowned sparrows, they will not sing at all.
D. If they do not hear singing from other white-crowned sparrows, they will sing, but abnormally.
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Bacterial symbionts of termite hindguts play a critical role in the termite's
A) reproduction. B) nitrogen metabolism. C) resistance to fungal infection. D) reproduction and nitrogen metabolism.
Which of the following sequences would most likely be present in a protein that binds ATP?
A. EKMFCLIGVGTKTYVFMK B. EKMFCLIGVGLKTYVFMK C. EKMFKMFGVGKSTYVFMK D. EKMFHHIGVKMFTYVFMK E. EKMFGLIGVGKSTYVFMK
Which of the following is NOT part of the male reproductive parts of a flower?
A. anthers B. microspores C. pollen D. sperm cells E. ovule
Declining amphibian populations are
correlated with a. habitat loss. b. introduction of new species. c. long-term changes in climate. d. fungal infections and parasitic diseases. e. all of these.