Which of the following have nitrogenous bases correctly paired in DNA?
A)adenine-guanine; thymine-cytosine
B)adenine-uracil; guanine-cytosine
C)adenine-thymine; guanine-cytosine
D)adenine-adenine; guanine-guanine
E)adenine-cytosine; guanine-thymine

Question

Quizplus · Accepted Answer

In DNA, adenine pairs with thymine (A-T) and guanine pairs with cytosine (G-C). Choice A has adenine paired with guanine, which is incorrect. Choice B has adenine paired with uracil, which is a RNA base, not a DNA base. Choice D has adenine paired with adenine and guanine paired with guanine, which is also incorrect. Choice E has adenine paired with cytosine and guanine paired with thymine, which is also incorrect.

Which of the Following Have Nitrogenous Bases Correctly Paired in DNA