When an individual has two different alleles for a given gene, they are ____ for that gene
a. heterozygous
b. homozygous
c. self-fertilized
d. self-pollinated
e. recessive
ANSWER: a
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An infection of the vaginal mucosa resulting in an abnormal discharge and offensive odor or itching is referred to as:
a. chorioamnionitis. b. bartholinitis. c. cervicitis. d. vaginitis.
Global warming has led to less snow cover in some areas. Snow cover provides insulation for
some burrowing, hibernating animals. In a population of rodents, some animals have slightly thicker fur, and animals with this trait are more likely to survive the winters with low snow cover and thus produce offspring in the spring. This scenario is an example of
a. an adaptation. b. evolution. c. natural selection. d. homology.
Which of the following is NOT density-independent?
a. floods b. earthquakes c. tornadoes d. volcanic eruptions e. disease
Is cultural transmission a form of phenotypic plasticity?
a. Yes, it causes phenotypic change without corresponding genetic change. b. Yes, it involves learning. c. No, phenotypic plasticity is an individual trait and not a population process. d. No, cultural transmission involves learning, which is not a form of plasticity.