It now seems clear that the strongest factor in speciation events is ________
A) genetic drift
B) sexual selection
C) natural selection
D) the bottleneck effect
C
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If cowbird eggs are laid in an oropendola nest in the open woodlands of Central America, what would be the expected
outcome?
a. The cowbird eggs would be ejected from the nest to eliminate the competition. b. The cowbird eggs would be ejected from the nest due to a reaction of the mother bird's immune system. c. The cowbird eggs would not be ejected from the nest because they provide an additional food source. d. The cowbird eggs would not be ejected from the nest because they provide protection from large predators. e. The cowbird eggs would not be ejected from the nest because they provide protection from parasites.
A prokaryotic cell
A. has a cell wall made of chitin. B. is at least 10 micrometers in diameter. C. does not have a nucleus. D. has membrane-bounded organelles. E. has a nucleus.
The best microscope to use to view internal
features of specimens is the a. basic light microscope. b. phase contrast light microscope. c. Nomarski process light microscope. d. scanning electron microscope. e. transmission electron microscope
Identify two adaptations in different living organisms and use natural selection to explain how each may have
logically evolved. What will be an ideal response?