IB Biology SL D2.1.5 Dna Replication Prerequisite Questions

Analyse when DNA replication occurs and how it changes chromatid and DNA quantities before cell division in IB Biology SL D2.1.5.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Explain that DNA replication produces sister chromatids before mitotic or meiotic separation.
  • Compare DNA quantity at G1 and G2 and relate the difference to replication.
  • Calculate chromatid number after replication from a stated diploid chromosome number.

IB Biology SL D2.1.5 Dna Replication Prerequisite Questions question 1

[Maximum number: 1]

The diagram shows the stages of the cell cycle.

Figure for Question IB Biology SL D2.1.5 Dna Replication Prerequisite Questions question 1 — IB Biology SL

Distinguish between the quantity of DNA of the cell at G1 and G2.

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