Multiple Choice
DNA is made of two chains of nucleotides. Which type of bonds hold the two chains together?
7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In RNA, which base would pair with thymine if thymine were present?
A
Guanine
B
Cytosine
C
Uracil
D
Adenine
Verified step by step guidance1
Recall the base pairing rules in DNA and RNA. In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C).
Understand that RNA normally contains uracil (U) instead of thymine (T). In RNA, adenine pairs with uracil.
Consider the hypothetical scenario where thymine is present in RNA. Since thymine pairs with adenine in DNA, the same pairing logic would apply.
Therefore, if thymine were present in RNA, it would pair with adenine, just as it does in DNA.
Summarize that the complementary base to thymine, whether in DNA or hypothetically in RNA, is adenine.
Related Videos
Related Practice
