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Define a dominant allele as one that is expressed in the phenotype if present in the genotype.

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Cambridge IGCSE BiologyInheritanceCore content

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Quick explanation

Define a dominant allele as one that is expressed in the phenotype if present in the genotype

  • This point belongs to Monohybrid inheritance, especially Monohybrid inheritance outcomes.
  • You need to be able to define a dominant allele as one that is expressed in the phenotype if present in the genotype.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Describe

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This objective helps connect Monohybrid inheritance outcomes to exam-style questions, flashcards, and revision notes for Monohybrid inheritance.

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Paper 3 structured question: Monohybrid inheritance

Paper 3Theory (Core)1 marks

Description

Dominant Alleles

A dominant allele is one that is expressed in the phenotype if present in the genotype.

  1. a

    State what is meant by a dominant allele?

    Aim for approximately 1 distinct marking point.

    [1]
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