Mitochondrial DNA (mtDNA)

Key term for OCR GCSE Biology B, used in Inheritance Mechanisms.

Definition

Genetic material inherited only from the mother, widely used to trace maternal evolutionary lineages.

Exam Context

Mitochondrial DNA (mtDNA) appears in OCR GCSE Biology B revision content for Genetics and the Genome, especially Inheritance Mechanisms and Development of Genetics.

Genetics and the Genome Inheritance Mechanisms Development of Genetics

Found in Revision Notes

Genetics and the Genome

Development of Genetics

Inheritance Mechanisms • Development of Genetics

Revise note

Related Key Terms

Carriers Chromosomes Dominant Double helix

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