Which of the following names identifies a group of organisms most specifically?
a. kingdom
b. phylum
c. genus
d. domain
c
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In DNA replication,
A) parental DNA shatters into pieces and joins with newly-synthesized pieces to fashion two double helices from one. B) parental DNA remains intact but guides formation of new double helices. C) the parental DNA splits and free nucleotides bond to their complements, building two DNA molecules from one. D) an entirely new double helix is built using information in the sequence of amino acids.
Isopropyl alcohol wiped across a skin site can sterilize it.
Answer the following statement true (T) or false (F)
The genetic code is fairly consistent among all organisms. The term often used to describe such consistency in the code is ________
A) exceptional B) trans-specific C) overlapping D) universal E) None of the answers listed is correct.
It has been proposed that large brains evolved in Homo species because
A) large brains allowed better visual acuity, which was favored by natural selection. B) large-brained individuals were better able to outwit and escape predators. C) natural selection favored large-brained individuals because they were better in social interactions. D) genetic drift increased the frequency of large-brained alleles. E) evolution of a large brain was a consequence of evolution of overall larger body size.