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6.3 The development of understanding of genetics and evolution

6.3 The development of understanding of genetics and evolution

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Question 2
H

The figure shows two explanations, X and Y, for the evolution of long necks in giraffes.

Figure: Two different explanations for the evolution of long necks in giraffes

image

a.

Give the letter of the explanation that matches Darwin's theory of evolution by natural selection.

[1]
b.

Explain, using the figure, why explanation X is not accepted by scientists today.

[2]
c.

Explanation Y begins with giraffes that have necks of different lengths. Name the process that produces new variation in the DNA of a population.

[1]
d.

Suggest why the change shown in explanation Y would take many generations.

[2]
Markscheme

6.3 The development of understanding of genetics and evolution Questions

  1. GCSE
  2. /Biology
  3. /6.3 The development of understanding of genetics and evolution

40 exam-style questions on AQA GCSE Biology 6.3 The development of understanding of genetics and evolution, covering 6.3.1 Theory of evolution, 6.3.2 Speciation, 6.3.3 The understanding of genetics, 6.3.4 Evidence for evolution, 6.3.5 Fossils, 6.3.6 Extinction, and 6.3.7 Resistant bacteria. Each one has a worked solution and a mark scheme showing where the marks go.

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