Question

Which of the following statements about base pairing in DNA is incorrect?

a) Adenine pairs with thymine
b) Cytosine pairs with guanine
c) Uracil pairs with adenine
d) Guanine pairs with thymine

Answer 1

The incorrect statement is that uracil pairs with adenine in DNA.

Step-by-step explanation:

The incorrect statement about base pairing in DNA is: c) Uracil pairs with adenine. This statement is incorrect because uracil (U) is not found in DNA; it is found in RNA instead. In DNA, thymine (T) pairs with adenine (A) and cytosine (C) pairs with guanine (G). Adenine and thymine form two hydrogen bonds, while cytosine and guanine form three hydrogen bonds.