After surviving a bottleneck, a population recovers to the point where it consists of as many individuals as it did prior to the bottleneck. Which of the following statements is most likely to apply to this population?
A) The postbottleneck population exhibits less genetic variation than the prebottleneck population.
B) The bottleneck subjected the population to stabilizing selection.
C) The postbottleneck population has less of a chance of going extinct than did the prebottleneck population.
D) The postbottleneck population exhibits more genetic variation than the prebottleneck population.
A
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Overproduction, variation, limits on population growth, and differential reproductive success are
components of: a. evolution by natural selection. b. evolution by inheritance of acquired characteristics. c. punctuated equilibrium. d. genetic inheritance. e. gradualism
Diffusion ________
A) is the result of the potential energy of atoms B) requires an input of cellular energy C) occurs when particles spread from areas where they are less concentrated to areas where they are more concentrated D) proceeds until equilibrium is reached
Antigen-antibody complexes trapped in tissues and triggering complement activation or mast cell degranulation are characteristic of
A) type I hypersensitivity. B) type II hypersensitivity. C) type III hypersensitivity. D) autoimmunity. E) graft rejection.
Which of the following statements about schistosomiasis is FALSE?
A) The cercariae penetrate human skin. B) They symptoms are caused by immune reactions to the eggs shed in the human host. C) The intermediate host is an aquatic snail. D) It is caused by a roundworm. E) The female worm lives in a groove that runs down the body of the male.