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Principles of Inheritance and Variation
Aneuploidy and polyploidy
1 question from 1 paper, each with its answer.
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Concepts tested
- Aneuploidy and polyploidy
All Questions
2024 Re-NEET 1 question
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Given below are two statements: Statement I: Failure of segregation of chromatids during cell cycle resulting in the gain or loss of whole set of chromosome in an organism is known as aneuploidy. Statement II: Failure of cytokinesis after anaphase stage of cell division results in the gain or loss of a chromosome is called polyploidy. In the light of the above statements, choose the correct answer from the options given below:Statement I is incorrect: failure of segregation of chromatids resulting in the gain or loss of a whole set of chromosomes describes polyploidy, not aneuploidy (aneuploidy involves the gain or loss of one or a few chromosomes, not the whole set). Statement II is also incorrect: failure of cytokinesis after the anaphase stage causes doubling of the whole chromosome set (polyploidy), not simply the gain or loss of a single chromosome.
