What is the sex chromosome composition of a person with Klinefelter syndrome?

a. XXX
b. XO
c. XXY
d. XYY
e. YY


ANSWER: c

Biology & Microbiology

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Random changes in gene frequency that occur in small populations describes the concept of

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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.

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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

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____ 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

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