If these resistant individuals continue to survive and prosper, new resistant populations might emerge. This would be an example of ________.
A. sexual selection
B. natural selection
C. the founder effect
D. genetic drift
B. natural selection
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Why was it not possible to classify viruses by morphology when they were initially discovered?
a. Initially, their morphology could change during infections. b. Once inside the host, they replicate too quickly to be inspected for discernable shape. c. They are too small to be seen with a standard microscope. d. So many of them have identical morphology but different hosts and modes
The sharp reduction of the gene pool and the
numbers of a population through a severe epidemic is an example of a. natural selection. b. genetic isolation. c. the bottleneck effect. d. the founder effect. e. all of these.
Define and explain the use of antisense technology in plant biotechnology
What will be an ideal response?
As discussed in the previous question, much effort has been devoted to classification of natural communities, and this effort continues today. Which American ecologist would have found the "pigeonholing" of natural communities into discrete classes most satisfying from a philosophical perspective?
A) R. H. Whittaker B) H. A. Gleason C) F. E. Clements D) J. Braun-Blanquet