Question:

Differentiate between X-chromosome and Y-chromosome with reference to –
length of non-homologous regions
type as per position of centromere.

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X and Y differ genetically; non-homologous regions drive sex-linked traits, centromere position defines chromosome type.
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Solution and Explanation

 

FeatureX-ChromosomeY-Chromosome
Length of Non-Homologous RegionsLonger (large non-homologous region)Shorter (small non-homologous region)
Type as per Centromere PositionMetacentric / SubmetacentricAcrocentric

Answer: X has longer non-homologous regions and is metacentric/submetacentric; Y has shorter regions and is acrocentric.

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