Proteins are polymers of how many different amino acids?

a. 16
b. 20
c. 24
d. 64

Ans: b. 20

Biology & Microbiology

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In Siamese cats, enzymes that code for dark fur color are only active in cooler temperatures. Thus, the tips of a

Siamese cat’s ears, feet, and tail are dark but not the warmer regions of its body core. This is an example of ____.

a. Pleiotropy b. environmental effects c. epistasis d. incomplete dominance e. co-dominance

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Biology & Microbiology

Mendel tested for heterozygotes by using

A. true-breeding cross. B. monohybrid cross. C. test cross. D. dihybrid cross.

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A(n) ________ in a chromosome is often lethal and occurs when a part of chromosome breaks off or is lost

Fill in the blank(s) with correct word

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Panting in mammals is the equivalent of which process in birds?

a. panting b. sweating c. estivation d. acclimatization e. torpor

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Biology & Microbiology