The first plant to colonize the plains of Mount Saint Helens after this volcano erupted in 1980 was a prairie lupine
The prairie lupine is therefore an example of ____.
a. a secondary successor
b. a pioneer species
c. a keystone species
d. an exotic species
e. an introduced species
ANSWER: b
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Sporadic cancers result from
A) recessive or dominant mutation in a somatic cell. B) recessive or dominant germline mutation. C) mutation in a sperm or oocyte. D) exposure to a cancer-causing virus.
Whose family tree could possibly harbor the recessive allele for Tay-Sachs Disease?
a. Ian's b. Sylvia's
Genetic drift is associated with
A. asexually reproducing populations. B. the size of the population. C. increased genetic diversity in a population. D. All of the choices are correct.
In the biosynthesis of glycerol, the reduction of dihydroxyacetone phosphate produces what important precursor molecule?
A. Glycerol-3-phosphate B. Dihydrogen monoxide C. Coenzyme A D. Phospholipids