Which of the following structure contains the cells genetic material ?
a. cytoplasm
b. nucleus
c. mitochondria
Ans: b. nucleus
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Sexual selection:a
is the basis for establishing elaborate societies. b. leads to a reproductive advantage for some individuals over others of the same sex and species. c. favors monogamous mating systems. d. leads to the investment of parental care of offspring. e. is not a type of natural selection.
Streptomycin is an antibiotic that interferes with the function of the 30S subunit of the prokaryotic ribosome. What is the consequence of treating a bacteria with streptomycin?
A. impaired oxygen synthesis B. impaired ATP synthesis C. impaired protein synthesis D. impaired DNA synthesis
If the frequency of a recessive gene in a
population under genetic equilibrium is 40 percent, in the next generation the frequency of that gene would be a. 20 percent. b. 40 percent. c. 80 percent. d. 2pq. e. unpredictable.
Of the mollusks, octopuses are in the class of
A. bivalves. B. gastropods. C. cephalopods. D. deuterostomes.