Variation
17.1What 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
Read the notes first
Chapter 17: Variation
Drill this topic
Every question on Variation, untimed, marked as you go.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
2 questions
1Oct / Nov 2020 · Paper 11 · Q39Show mark scheme →
Ablood group
Beye colour
Cheight
Dsex
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2Oct / Nov 2020 · Paper 12 · Q39Show mark scheme →
Abody mass
Bheart rate
Cheight
Dsickle cell anaemia
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