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Question

Location or sites where single base DNA differences occur are called as

A
VNTR
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B
STR
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C
SNP
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D
Repetitive DNA
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Solution

The correct option is C SNP
Satellite DNA is the highly repetitive DNA consisting of short sequences repeated a large number of times.
  • Variable number tandem repeats (VNTR) is a minisatellite which usually has unit repeat size of about 10-100 bp.
  • STR or short tandem repeats are microsatellites usually whose unit repeat size is from 2-6 bp.
SNP stands for single nucleotide polymorphism which is a genetic variation due to a single nucleotide difference in the DNA. It involves a change in the nucleotide at one particular site in the DNA.

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