Meiosis
Exam-ready definition
Reduction division in which the chromosome number is halved, producing four genetically different gametes from one parent cell.
How this is marked
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.
In an exam answer
Explaining gamete formation: 'Gametes are made by meiosis, which halves the chromosome number and produces four genetically different cells.'
Full topic guide: Inheritance