The skull of the chimpanzee and human are
most closely related
a. as 48-hour embryos.
b. as adults.
c. as adolescents.
d. as infants.
e. never; they are not structurally close
D
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Which organism would be found exclusively in the benthic environment?
a. painted turtles b. pond snail c. bur-reeds d. cattails e. bloodworms
Gene disruption, in which large fragments of DNA are inserted in the middle of a gene’s coding sequence, is a type of
a. site-directed mutagenesis. b. cassette mutagenesis. c. expression vector. d. operon fusion.
The difference between the per capita birth rate and the per capita death rate is the ____
a. per capita growth rate b. per capita population curve c. intrinsic rate of increase
d. geometric population curve e. exponential population curve
Which of the following properties of RNA is most directly responsible for its ability to form complex shapes?
A) the presence of uracil instead of thymine B) the fact that RNA is primarily double-stranded C) the relative instability of RNA compared to DNA D) the fact that RNA is primarily single-stranded E) the substitution of deoxyribose in DNA with ribose in RNA