If S. niagarae did evolve into S. yellowstonensis this would be an example of which of the following?
a. Directional selection
b. Stabilizing selection
c. Disruptive selection
d. Artificial selection
Answer: a. Directional selection
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What is the term for crosses between parents that differ in only one trait?
A) Testcrosses B) Cross fertilize C) Monohybrid crosses D) Dihybrid crosses E) Reciprocal crosses
The concept that living organisms arise from nonliving material is called
A. biogenesis. B. spontaneous generation. C. cell theory. D. germ theory.
In order to meet the conditions of the Hardy-Weinberg predictions, a population must:a
be very large. b. mutate very quickly. c. have extensive mating rituals. d. have a large number of immigrants. e. have a high rate of natural selection.
Organisms are named and classified based on physical characteristics in
A.) evolutionary trees B.) Cladograms C.) Linnaean Taxonomy D.) Molecular Clocks