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Homologous structures — Edexcel GCSE Biology Definition | GradeGen

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Biology
Key terms
Homologous structures

GCSE Biology · key term

Homologous structures

Definition

Body structures in different species that share an underlying pattern because they were inherited from a common ancestor.

Used by Edexcel

How each exam board covers it

Edexcel GCSE Biology · 1BI0

Specification 4.6B · Paper 1

Structures with this shared underlying pattern are called homologous structures.
Revise: Pentadactyl Limb

Edexcel Biology past papers

Related key terms

Common ancestor
Evolution
Pentadactyl limb

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