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6.3 The development of understanding of genetics and evolution

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Question 18

Scientists examine three fossils found in rock.

FossilObservations
PA copy of a vertebra is made entirely of minerals. No original bone remains.
QFine branching lines pass through the rock and match the paths made by plant roots. No plant material remains.
RThe shape of the fossil cannot be identified. Tests show that no original organism material remains.
a.

Explain how Fossil P and Fossil Q formed.

[4]
b.

Explain why the test result for Fossil R is not enough to decide whether it formed by mineral replacement or as a trace fossil.

[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

71 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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