During the spring, male sage grouse gather in an open area and strut about, erecting their feathers in a fanlike display. They also make booming sounds using their inflated air sacs. The function of this dance is to
A) frighten off smaller birds from the territory.
B) select the showiest females and mate.
C) attract the attention of females.
D) imprint the younger male birds.
Answer: C
You might also like to view...
Parasitism is a type of symbiotic association
a. True b. False
The sharp reduction of the gene pool and the numbers of a population through a severe epidemic is an example of
a. artificial selection. b. genetic isolation. c. the bottleneck effect. d. the founder effect. e. natural selection.
During spermatogenesis in meiosis II, ____ form(s)
a. primary spermatocytes b. secondary spermatocytes c. spermatids d. mature sperm e. a zygote
The ability of some microbes, such as Trypanosoma or Giardia to alter their surface molecules and evade destruction by the host's antibodies is called
A) antigenic variation. B) lysogenic conversion. C) virulence. D) cytopathic effect. E) cytocidal effect.