1 GCSE Biology resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter GCSE SubjectClear filter Biology Exam board OCR TopicClear filter Genes, DNA, Inheritance & variation, Genetic testing. Resources Crossword Flashcards Multi-tool Quizsearch Biology 1- OCR 21st century science GCSE, Biology 38 flashcards Search again