The emergence of many diverse species from a common ancestor that finds itself in a new environment is called
A) adaptive radiation.
B) gradualism.
C) disruptive selection.
D) allopatric speciation.
E) hybridization.
Answer: A) adaptive radiation.
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Behavioral traits are useful in differentiating species because behaviors ____
a. are never genetically determined b. related to mating may create prezygotic isolation c. of fossilized specimens are easy to infer d. are independent of morphological characteristics e. are always learned
____ is the degree of adaptation to a specific environment
a. Fecundity b. Fertility c. Fitness d. Adaptation e. Natural selection
In the chalk bass drift activity last week, which of the following caused drift to occur?
A. A bottleneck B. The law of independent assortment C. The founder effect D. Random donation of gametes to offspring
Lymphocytes that become part of antibody-mediated immunity arm of the adaptive immune response develop in the:
A) bone marrow. B) intestine. C) lymph nodes. D) thymus. E) spleen.