From an evolutionary standpoint, why is it important to have more bitter-sensing taste buds than any
other type?
a. there are more bitter-tasting foods than any other in nature
b. more people prefer bitter-tasting foods
c. many poisons have a bitter taste so only tiny amounts are needed to allow sensing to take
place
d. bitter taste is associated with mating selection
e. to prevent over-consumption of sugary foods
C
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Legionella pneumophila may be found in
A. shower stalls. B. soil and aquatic ecosystems. C. air-conditioning systems. D. All of the choices are correct.
A phenomenon known as ________ [two words] occurs under conditions where a selection pressure works against deleterious mutations, resulting in the corresponding decrease in the frequency of a closely linked neutral mutation
Fill in the blank(s) with correct word
How many bones are in the human body?
A) 203 B) 206 C) 300 D) 308
HIV has 9 genes in its RNA genome. Every HIV particle contains two RNA molecules, each molecule containing all 9 genes. If, for some reason, the two RNA molecules within a single HIV particle do not have identical sequences, then which of these terms can be applied due to the existence of the non-identical regions?
A) homozygous B) gene variability C) nucleotide variability D) average heterozygosity E) all except A