During DNA Base Pairing,which of the Following Would Be Incorrectly

Question

During DNA base pairing,which of the following would be incorrectly paired?
A)guanine:cytosine
B)adenine:thymine
C)purine:purine
D)purine:pyrimindine

Accepted Answer

Purines (adenine and guanine) always pair with pyrimidines (thymine and cytosine) and vice versa. If two purines or two pyrimidines paired, the width of the DNA strand would not be consistent, leading to issues with the double helix structure.