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5.1 Inheritance

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Question 15
F

Gametes are made by meiosis.

Which statement explains why gametes must be made by meiosis and not by mitosis?

[1]
A

Meiosis makes cells that are identical, so all of the offspring are the same.

B

Meiosis doubles the chromosome number, so the zygote has enough genes.

C

Meiosis halves the chromosome number, so the zygote has the diploid number.

D

Meiosis makes body cells, so the embryo can grow quickly after fertilisation.

Markscheme

5.1 Inheritance Questions

  1. GCSE
  2. /Biology
  3. /5.1 Inheritance

186 exam-style questions on OCR GCSE Biology 5.1 Inheritance, covering 5.1.1 The genome, 5.1.2 Environment and phenotype, 5.1.3 Variants and mutations, 5.1.4 How genetic variants influence phenotype, 5.1.5 Asexual and sexual reproduction, 5.1.6 Haploid and diploid, 5.1.7 Meiotic cell division, 5.1.8 Single gene inheritance, 5.1.9 Predicting single gene crosses, 5.1.10 Sex determination, 5.1.11 Multiple gene inheritance, and 5.1.12 Development of our understanding of genetics. Each one has a worked solution and a mark scheme showing where the marks go.

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