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Variation

17.1

What the syllabus asks of you

  • Describe variation as differences between individuals of the same species
  • Understand that continuous variation results in a range of phenotypes between two extremes, including body length and body mass
  • Understand that discontinuous variation results in a limited number of phenotypes with no intermediates, including ABO blood groups, seed shape and seed colour in peas
  • Understand that discontinuous variation is usually caused by genes only and continuous variation is caused by genes and the environment
  • Investigate and describe examples of continuous and discontinuous variation

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Chapter 17: Variation

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2 questions

1Oct / Nov 2020 · Paper 11 · Q39
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Ablood group
Beye colour
Cheight
Dsex

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2Oct / Nov 2020 · Paper 12 · Q39
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Abody mass
Bheart rate
Cheight
Dsickle cell anaemia

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