If %G is 25% in a DNA sample, what is %C?

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

If %G is 25% in a DNA sample, what is %C?

Explanation:
In double-stranded DNA, complementary bases occur in equal amounts: G pairs with C, and A pairs with T. If G is 25%, then C must also be 25% to balance the base pairing. That leaves 50% for A and T, and since A equals T, each is 25%. So the percentage of C is 25%.

In double-stranded DNA, complementary bases occur in equal amounts: G pairs with C, and A pairs with T. If G is 25%, then C must also be 25% to balance the base pairing. That leaves 50% for A and T, and since A equals T, each is 25%. So the percentage of C is 25%.

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