CBSENEETClass 11
What is meiosis?
Answer
Meiosis is a type of cell division in which one parent cell divides to form four daughter cells, each with half the chromosome number of the parent.
The working
Definition
Meiosis is reductional division that halves the chromosome number, producing four haploid cells from one diploid cell.
Two divisions
It involves two successive divisions, meiosis I and meiosis II, but DNA replicates only once.
Where it occurs
It takes place in reproductive cells to form gametes such as sperm and egg.
Significance
Meiosis keeps chromosome number constant across generations and introduces variation through crossing over.
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