Human vocal cords are located in the
a. glottis.
b. pharynx.
c. trachea.
d. larynx.
e. bronchus
D
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Polygenic inheritance is often modified by ____
a. the environment b. gene blending c. epistasis d. dihybrid crosses e. pleiotropy
An individual who is homozygous ______.
A. expresses the dominant trait B. carries two different alleles for a gene C. expresses the recessive trait D. carries two copies of the same allele for a gene
A population's age structure tracks
a. the average age of the members of the population. b. how long the population has existed in the area. c. the rate at which the population is aging. d. the relative numbers of each age.
By what means are amino acids absorbed by the small intestine?
a. diffusion b. facilitated diffusion c. osmosis d. passive transport e. active transport