The main stimulus for phototropism is light of ____ wavelengths

a. red
b. green
c. yellow
d. blue
e. far red


ANSWER: d

Biology & Microbiology

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A well-substantiated explanation of some aspect the natural world, based on a body of facts that have been repeatedly confirmed through observations and experiments, is referred to as a(n) ________.

A. hypothesis B. theory C. fact D. idea

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The ____________________ provides a means of measuring allele frequencies in the population. Fill in the blank(s) with the appropriate word(s)

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When nondisjunction occurs early in embryogenesis rather than gametogenesis, what would you expect in the resulting karyotype?

A) monosomy B) trisomy C) mosaicism D) uniparental disomy E) random X-inactivation

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The adjustable ring of contractile and connective tissues that controls the amount of light entering the eye is the ____.

A. lens B. cornea C. pupil D. iris E. retina

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