One characteristic of continuous variation is that ____
a. traits are usually quantified by counting
b. only a single gene pair contributes to the phenotype
c. individual genes have a large effect on the phenotype
d. phenotypic expression varies across a wide range
e. it is best analyzed in individuals rather than in populations
d
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Saturation can be defined as
A) denaturation of an enzyme. B) the inability to increase reaction velocity beyond a finite upper limit. C) inhibition of enzyme function by blocking the active site. D) the substrate concentration at which velocity reaches one-half maximum velocity. E) a characteristic of all uncatalyzed reactions.
An example of a dimorphic fungus is:
a. Candida albicans. b. Coccidioides immitis. c. Cryptococcus neoformans. d. Aspergillus fumigatus.
Coyote populations are lower where wolf populations are increasing because
A) wolves directly compete with coyotes. B) wolves are a primary predator on coyotes. C) wolves can withstand colder temperatures than coyotes. D) wolves facilitate coyote populations by leaving scavenged meat.
Which of the following processes is incorrectly matched to its description?
A) Pinocytosis: Imports dissolved substance using small vesicles B) Receptor-mediated endocytosis: Uses specific binding between structures on the plasma membrane binding to ligands C) Exocytosis: Exports materials into a cell D) Endocytosis: Imports materials into a cell E) Phagocytosis: Imports undissolved substances but not whole cells or viruses