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Cambridge IGCSE Biology practice

What is a recessive allele?

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MCQ

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cambridge_mcq

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Topic

Monohybrid inheritance

Exam-style question

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What is a recessive allele?.

  1. A.An allele expressed only when no dominant allele is present
  2. B.An allele always expressed regardless of other alleles
  3. C.An allele that is dominant over others
  4. D.An allele that cannot be inherited

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Paper 3 structured question: Monohybrid inheritance

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Description

Recessive Alleles

A recessive allele is one that is expressed in the phenotype only when no dominant allele is present in the genotype.

  1. a

    Describe what is meant by a recessive allele?

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