The laboratory procedure for copying selected segments of DNA is
A. the polymerase chain reaction.
B. translation.
C. jumping genes.
D. a point mutation.
A. the polymerase chain reaction.
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How might a change of one amino acid at a site, distant from the active site of an enzyme, alter an enzyme's substrate specificity?
A) by changing the enzyme's stability B) by changing the enzyme's location in the cell C) by changing the shape of an enzyme D) by changing the enzyme's pH optimum E) An amino acid change away from the active site cannot alter the enzyme's substrate specificity.
Hyphae are tubular cell walls that surround the cytoplasmic membrane
Indicate whether the statement is true or false.
Armadillos have a diploid chromosome number of 64. At prophase I, an armadillo's cell would have ____ tetrads present.
A. 56 B. 32 C. 78 D. 64
The biological diversity encountered increases as one moves from the poles to the tropics. Within a particular latitude, diversity also varies:
A) between different continents B) between different habitats C) as a function of temperature and precipitation D) as a function of topographic complexity E) all of the above