What is the persistent survival of microorganisms on a surface of the human body called?
A. A reservoir
B. Infection
C. Nosocomial infection
D. Colonization
Ans: D. Colonization
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Damage to which of the following would prevent the production of the most hormones?
1.hypothalamus
2.thyroid gland
3.pancreas
4.adrenal glands
The basic unit of the nervous system is
a. the neuron. b. neuroglia. c. the brain. d. a nerve. e. a nerve impulse.
In a population that meets the Hardy-Weinberg equilibrium assumptions, 81 percent of the individuals are homozygous for a recessive allele
What percentage of the individuals would be expected to be heterozygous for this locus in the next generation?
The mating displays of a male mallard duck do not attract a female pintail duck. This is an example of
A. seasonal isolation. B. behavioral isolation. C. habitat preference. D. geographic isolation.