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Cambridge IGCSE Biology practice

Where do the two alleles for a gene come from?

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Show answerMonohybrid inheritance revisionRevise the key idea

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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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Where do the two alleles for a gene come from?.

  1. A.Both from one parent
  2. B.One from each parent
  3. C.From the environment
  4. D.From mutations

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Paper 3 structured question: Monohybrid inheritance

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Description

Definition of Homozygous

An organism has two alleles for each gene. When these alleles are identical, the organism is described as homozygous for that gene.

  1. a

    State What is meant by homozygous?

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