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5.2 Natural selection and evolution

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Question 36
F

Scientists can use DNA sequencing to help classify organisms. What do the scientists compare?

[1]
A

the number of chromosomes in each cell

B

the size of the nucleus in each cell

C

the number of genes in each organism

D

the order of the bases in the DNA

Markscheme

5.2 Natural selection and evolution Questions

  1. GCSE
  2. /Biology
  3. /5.2 Natural selection and evolution

122 exam-style questions on OCR GCSE Biology 5.2 Natural selection and evolution, covering 5.2.1 Genetic variation within a population, 5.2.2 Developments in classification systems, 5.2.3 How evolution occurs through natural selection, 5.2.4 Evolution as change over time, 5.2.5 Evidence for evolution, and 5.2.6 Darwin and Wallace. Each one has a worked solution and a mark scheme showing where the marks go.

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