Which base pairs with cytosine in DNA and RNA?

Study for the DNA Structure, Replication, Transcription and Translation Test with flashcards and multiple choice questions. Each question offers hints and explanations. Prepare thoroughly and excel in your exam!

Multiple Choice

Which base pairs with cytosine in DNA and RNA?

Explanation:
Base pairing rules in nucleic acids ensure a stable structure: cytosine pairs with guanine. They form three hydrogen bonds, which helps lock the pairing in place and maintain a consistent width in the nucleic acid structure. This pairing occurs in both DNA and RNA contexts, with cytosine’s partner being guanine, while adenine pairs with thymine in DNA or with uracil in RNA. So cytosine does not pair with thymine or with cytosine itself.

Base pairing rules in nucleic acids ensure a stable structure: cytosine pairs with guanine. They form three hydrogen bonds, which helps lock the pairing in place and maintain a consistent width in the nucleic acid structure. This pairing occurs in both DNA and RNA contexts, with cytosine’s partner being guanine, while adenine pairs with thymine in DNA or with uracil in RNA. So cytosine does not pair with thymine or with cytosine itself.

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