Which of the following statements about communication in the White-Crowned Sparrow is not correct?
A. The White-Crowned Sparrow's song is an
advertisement display behavior.
B. The White-Crowned Sparrow's song is
learned by imprinting, a sensitive period that
takes place about 10–50 days after hatching.
C. During the learning phase, the White-
Crowned Sparrow's subsong is a sequence of
unstructured twittering.
D. If a tape of another species song, for
example the Swamp Sparrow, is played
during the sensitive period, the White-
Crowned male will learn that song.
E. If deprived of hearing the adult male's
song during the early sensitive period, the
bird will continue to sing an unstructured
twittering throughout its life.
D
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During the paroxysmal stage of pertussis, symptoms are:
a. runny nose and mild cough. b. severe and violent coughing. c. neutrocytosis and fever. d. lymphadenitis.
What could be a possible consequence if a structural gene's TATA box is mutated?
A. The transcriptional start site may not function properly. B. Transcription may start at a variety of sites. C. Unusable transcripts may be produced. D. The preinitiation complex may form at the wrong site. E. All of the choices are correct.
The accumulation of traits that increase the relative fitness of organisms in their environment over time results in
____.
a. mutation b. adaptation c. heterozygote advantage d. homozygote advantage e. diploidy
Seagrasses can reach high productivity levels with the aid of:
a. oxygen brought to their roots via mud shrimp burrows. b. symbiotic, nitrogen-fixing bacteria. c. their leaves, cleared of epiphytes by grazers. d. fertilization by manatees. e. eutrophic water conditions.