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  4. A cell undergoing meiosis produces four daughter cells, two of which are aneuploids, while two are haploid. This can occur due to

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Q. A cell undergoing meiosis produces four daughter cells, two of which are aneuploids, while two are haploid. This can occur due to

Cell Cycle and Cell Division

Solution:

The process of separation of homologous chromosomes during anaphase-I is referred to as disjunction. This process is responsible for reducing the chromosome number to half. Failure of occurence of this process i.e. non-disjunction results in failure of homologous chromosomes to separate, so that one gamete comes to have an extra chromosome (N + 1) while the other becomes deficient in one chromosome (N -“ 1). This results in the production of aneuploids.