Question

in opposing antiparallel strands, how many bonds form between cytosine and guanine?
2
1
cytosine and guanine dont bind
3

Explanation:

In DNA, base pairing occurs between complementary bases. Cytosine (C) pairs with guanine (G). The number of hydrogen bonds between them is a key characteristic. Through molecular structure knowledge, it is known that C - G base pairs form 3 hydrogen bonds. Adenine (A) and thymine (T) form 2 hydrogen bonds.

Answer:

3