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3.1 Reproduction and meiosis

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Question 23

Scientists study reproduction in a freshwater snail species.

MeasurementValue
chromosomes in each diploid cell22
diploid parent cells that each complete meiosis7

Later, one male gamete and one female gamete of this species fuse at fertilisation.

Calculate

  • the total number of cells produced when the seven parent cells complete meiosis
  • the number of chromosomes in each cell produced
  • the number of chromosomes in the cell formed at fertilisation.

Show your working.

[3]
Markscheme

3.1 Reproduction and meiosis Questions

  1. GCSE
  2. /Biology
  3. /3.1 Reproduction and meiosis

92 exam-style questions on Edexcel GCSE Biology 3.1 Reproduction and meiosis, covering 3.1.1 Advantages and disadvantages of reproduction and 3.1.2 Role of meiotic cell division. Each one has a worked solution and a mark scheme showing where the marks go.

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