IGCSE Biology glossary
Meiosis
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Definition
Reduction division in which the chromosome number is halved, producing four genetically different gametes from one parent cell.
What to include in an exam answer
Three scoring ideas: halves the chromosome number, produces gametes, and genetic variation. The classic compare-mitosis-and-meiosis table question is near-guaranteed across a syllabus cycle.
Example in context
Explaining gamete formation: 'Gametes are made by meiosis, which halves the chromosome number and produces four genetically different cells.'
Related syllabus topic
Inheritance