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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
Question
What is non–disjunction?
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Answer

The inability of homologous chromosomes to separate out during meiosis in an individual is called non–disjunction.
As a result of this, some gametes get both chromosomes, while others receive neither.

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