What is the sex chromosome composition of a person with Klinefelter syndrome?
a. XXX
b. XO
c. XXY
d. XYY
e. YY
ANSWER: c
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Random changes in gene frequency that occur in small populations describes the concept of
a. genetic drift. b. convergent evolution. c. adaptive radiation. d. sympatric speciation. e. parapatric speciation.
Different pitched (high- or low-toned) sounds are discriminated by the
A) tympanic membrane. B) round and oval windows. C) malleus, incus, and stapes. D) hair cells in specific regions of the cochlea. E) auditory nerve.
Which is the correct equation for the Hardy-Weinberg principle?
a. p2 + 2pq2 + q2 + q2 = 100 b. 2p2 + 2pq + 2q2 = 1000 c. p2 + 2p + 2q + q2 = 1 d. p2 ? 2pq + q2 = 1 e. p2 + 2pq + q2 = 1
____ is a lipid-derived hormone produced in response to the presence of insect pests
a. Cytokinin b. Abscisic acid
c. Jasmonic acid d. Gibberellin e. Auxin