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Edexcel A-Level Biology AS 3.10 Meiosis and Genetic Variation Questions

Track homologous chromosomes and chromatids through the diagram, name the correct meiotic event and connect new allele combinations to variation in gametes.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Explain crossing over between non-sister chromatids at chiasmata in prophase I.
  • Explain independent assortment through random homologous-pair orientation at metaphase I.
  • Complete chromosome or gamete diagrams with the correct chromosome and chromatid number.

Edexcel A-Level Biology AS 3.10 Meiosis and Genetic Variation Questions question 1

[Maximum number: 3]

The photograph shows a mother and baby Malayan tapir (Tapirus indicus). They live in the rainforests of southeast Asia. Each gamete of a Malayan tapir contains 26 chromosomes.

Figure for Question Edexcel A-Level Biology AS 3.10 Meiosis and Genetic Variation Questions question 1 — Edexcel A-Level Biology AS

© Sipa US / Alamy Stock Photo

The body cells of the mother Malayan tapir have some genetic similarities to and differences from the cells of her baby. Explain why the body cells of the mother and baby have genetic similarities and differences.

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