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  4. Chromosome number 2n-1 is an example of:

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Q. Chromosome number $ 2n-1 $ is an example of:

ManipalManipal 2004

Solution:

$ 2n-1 $ is an example of monosomic condition in this an individual has one chromosome less than the normal somatic chromosome of the species. In polyploid species, it is not deteriorous but in normal diploid species, it is deteriorous and causes decrease in crop yield.