For speciation to occur there must be
A) sexual reproduction.
B) genetic variation.
C) isolation.
D) natural selection.
Answer: B
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In vertebrates, the location of spinal cord damage determines the region of the body that is impaired. This is a product of:
A. organization of efferent neurons. B. localization of spinal ganglia. C. segmentation of the spinal cord. D. organization of spinal nerves.
Which of the following is not a net product or reactant of photosynthesis?
A. carbon dioxide B. glucose C. water D. oxygen E. ATP
Name at least three applications for examining sequence variants such as RFLPs
What will be an ideal response?
The parasitic Rhagoletis flies show such a preference for either hawthorn or apple trees that they are no longer interbreeding populations. What type of speciation does this scenario illustrate?
A) Specialization B) The founder effect C) Allopatric D) Polyploidy E) Sympatric