Which base always pairs with guanine?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Enhance your knowledge of genetics and molecular biology. Study with interactive quizzes and multiple-choice questions, complete with hints and detailed explanations. Prepare effectively for your exam!

Multiple Choice

Which base always pairs with guanine?

Explanation:
Base-pairing specificity in DNA means guanine always pairs with cytosine. They form three hydrogen bonds, which provides extra stability and fits the regular width of the double helix. Adenine pairs with thymine (or uracil in RNA) via two hydrogen bonds, not with guanine, so guanine’s partner is cytosine. This G–C pairing keeps the two strands complementary and helps maintain DNA’s structure.

Base-pairing specificity in DNA means guanine always pairs with cytosine. They form three hydrogen bonds, which provides extra stability and fits the regular width of the double helix. Adenine pairs with thymine (or uracil in RNA) via two hydrogen bonds, not with guanine, so guanine’s partner is cytosine. This G–C pairing keeps the two strands complementary and helps maintain DNA’s structure.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy