Which of the following techniques reveals
differences in the number of tandem repeats
among individuals?
a. PCR
b. DNA amplification
c. DNA hybridization
d. DNA profiling
e. DNA probe analysis
D
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Select the hormone that is NOT involved in crustacean molting
a. molt-inhibiting hormone b. juvenile hormone c. brain hormone d. ecdysone e. molt-stimulating hormone
The letter “A” in the above figure represents the
a. style. b. ovary. c. stigma. d. anther. e. filament.
Perhaps the biggest problem associated with the Endangered Species Act as it currently stands is that it:
a. tends to protect a limited number of organisms.
b. tends to protect plants and some animals, but often under-represents mammals and insects. c. protects animals whose populations are currently on the increase. d. currently protects ecosystem diversity. e. has not been amended since its passage in 1962.
Which of the following is NOT true of tropical communities?
A. They occur at the equator. B. They receive more intense sunlight. C. They have a longer growing season. D. They receive less rainfall than temperate communities. E. They have been established for a longer period of time.