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JAMB Biology 2003 Question 38

Question 38

Chromosomes, DNA and Sex Linkage

If a DNA strand has a base sequence TCA, its complementary strand must be

  1. A.ATG
  2. B.TAG
  3. C.GAT
  4. D.AGT.
Show the answer and explanation

Answer: D (AGT.)

Explanation

In DNA, A pairs with T and C pairs with G. So T-C-A pairs with A-G-T.