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Question 16

One strand of DNA carries the base C. Which base sits opposite it on the other strand?

  1. Base A
  2. Base T
  3. Base GCorrect answer
  4. Base C again

Explanation

C and G form the second fixed couple, so a C on one strand is always faced by a G on the other. Placing T opposite C would take the partner that belongs with A, which would leave both of those bases without the partner the rule assigns them.

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Question 16: One strand of DNA carries the base C. Which base sits… · Genetics Basics · Questena