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AP Biology 6.2 DNA Replication

Practise AP Biology 6.2 questions by connecting semiconservative DNA synthesis and replication-fork enzymes with hereditary continuity.

Syllabus
Effective Fall 2025
Course
AP Biology

Exam points

  • explain semiconservative 5′→3′ DNA synthesis using leading and lagging strands
  • match helicase, polymerase, ligase and topoisomerase with replication-fork roles
  • connect replication errors or enzyme disruption to continuity of hereditary information

Covered syllabus points

6.2.A—Describe the mechanisms by which genetic information is copied for transmission between generations

6.2 DNA Replication question 1

[Maximum number: 1]

Which of the following best explains how continuity of genetic information in cells is ensured across generations?

A

Replication uses a parental strand of DNA as a template to create a new strand of DNA.

B

DNA molecules are shaped like a double helix with a constant diameter throughout.

C

Transcription copies the information in DNA into an RNA transcript.

D

Cells contain different polymerases for DNA replication and transcription.

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