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Cambridge IGCSE Biology practice

Paper 3 structured question: Variation

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Variation

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Paper 3Theory (Core)1 marks

Variation in a population can be continuous or discontinuous. Continuous variation results in a range of phenotypes between two extremes.

Description

Continuous Variation

Body length and body mass are examples of traits that show continuous variation in a population.

  1. a

    State what continuous variation means in terms of phenotypes.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Variation

Paper 3Theory (Core)2 marks

Description

Continuous Variation in Body Traits

Scientists measured body length and body mass of individuals in a population and found many intermediate values between the smallest and largest individuals.

  1. a

    Identify two traits that show continuous variation.

    Aim for approximately 2 distinct marking points.

    [2]