Based on the passage, the authors’ statement "If a
pair consisted of two purines, for example, there
would not be room for it" (lines 29-30) implies that a
pair
A) of purines would be larger than the space
between a sugar and a phosphate group.
B) of purines would be larger than a pair consisting
of a purine and a pyrimidine.
C) of pyrimidines would be larger than a pair of
purines.
D) consisting of a purine and a pyrimidine would be
larger than a pair of pyrimidines.

According to the authors' explanation (lines 25–26), "only specific pairings of bases will fit into the structure" of the DNA molecule. It is implied that any other pairing would not "fit into the structure" of the DNA molecule by the need that these pairings have "a purine and the other a pyrimidine to bridge between the two chains" (lines 27–29).

A pair of purines would not fit into the structure of the DNA molecule because they are bigger than the necessary purine/pyrimidine pair.

Choice A is wrong since the distance between a sugar and phosphate group is not covered in this section. Choice C is inaccurate because it is never made apparent in the paragraph how big the pyrimidines are in relation to one another.

Here's another question with an answer similar to this about purines: https://brainly.com/question/919868

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