OCR GCSE Biology B · J257
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
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GCSE Biology · key term
A method of estimating a mobile animal population by marking a first catch and checking how many marked animals appear in a later catch.
Used by OCR
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
For capture–mark–recapture, use the number marked in the second catch, not the total number caught in that catch, as the denominator.
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