Complementary base pairing in dna means that dna is easy to copy. how does this work?
a. dna isn't very easy to copy, but there's no need to do that, so it doesn't matter.
b. the base pairs that make up the center of the dna molecule will only match with identical copies of themselves a: a, c: c, etc.
c. the base pairs that make up the center of the dna molecule will only match up a with t or c with g.
d. it doesn't work very well, so many mistakes are made when dna gets copied as cells divide.
e. the base pairs that make up the center of the dna molecule match other dna molecules perfectly.

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