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Question 14

Complete the statement: the bases found in DNA are shown by the letters ...

  1. A, U, C and G
  2. A, T, C, G and U
  3. A, T and G only
  4. A, T, C and GCorrect answer

Explanation

DNA works with exactly four bases, and T is one of them while U is not. Swapping T for U gives the letter set of a different nucleic acid, and adding a fifth letter or dropping one breaks the arrangement of two fixed base couples.

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Question 14: Complete the statement: the bases found in DNA are shown by… · Genetics Basics · Questena