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12th Biology 2018 Set1 Delhi Board Paper Solution

Question 12

Expand VNTR and describe its role in DNA fingerprinting. 

Answer

VNTRs (Variable Number Tandem Repeats) each individual inherits these repeats from his/her parents which is used as genetic markers. One haIf of VNTR alleles of 'the child resembles that of mother and other half the father. The copy number varies from chromosomes to chromosome in an individual. The number of repeat show very high degree of polymorphism.