Homologous structure — Science definition

A feature sharing an underlying plan through inheritance, such as the one-bone, two-bone, digits forelimb across mammals doing quite different jobs.

Where it is taught

• Common Ancestry, Evidence & Branching Trees — Evolution, Evidence & Life History, Life Science & Scientific Inquiry, Grade 7

Taught alongside

• common ancestor
• vestigial structure
• phylogenetic tree
• node

Elsewhere

• All science terms
• All courses and reading

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