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A decline in population size can pose risks to a species by decreasing genetic diversity, which can affect its survival and adaptability.

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Cambridge IGCSE BiologyHuman influences on ecosystemsSupplement content

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A decline in population size can pose risks to a species by decreasing genetic diversity, which can affect its survival and adaptability

  • This point belongs to Conservation, especially Conservation outcomes.
  • You need to be able to a decline in population size can pose risks to a species by decreasing genetic diversity, which can affect its survival and adaptability.
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Explain

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Paper 4 structured question: Conservation

Paper 4Theory (Extended)2 marks

Description

Population Decline

The population size of a species has decreased due to habitat loss and hunting. Scientists are concerned about the long-term survival of this species.

  1. a

    Explain how a decline in population size can affect the genetic diversity of the species.

    Aim for approximately 2 distinct marking points.

    [2]
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