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WAEC Biology 2020 Question 48

Question 48

Chromosomes, DNA and Sex Linkage

Replication of DNA molecules is catalysed by an enzyme called

  1. A.polymerase.
  2. B.ptyalin.
  3. C.pepsin.
  4. D.amylase.
Show the answer and explanation

Answer: A (polymerase.)

Explanation

DNA polymerase joins nucleotides to build the new DNA strands. Ptyalin, pepsin and amylase are digestive enzymes.