Question

which of the following is a valid nucleotide base pair in dna?
a.) a - g
b.) a - c
c.) g - c
d.) g - u

Explanation:

In DNA, the base - pairing rules are adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C). Option a (A - G) and option b (A - C) do not follow these rules. Option d (G - U) is incorrect because uracil (U) is found in RNA, not DNA. Option c (G - C) follows the correct base - pairing rule for DNA.

Answer:

C. G - C