Class 12th Biology 2017 Set1 Delhi Board Paper Solution
Question 14
A number of passengers were severely burnt beyond recognition during a train accident. Name and describe a modern technique that can help hand over the dead to their relatives.
Answer
A modern technique that can help is DNA fingerprinting. This technique was initially build by Alec Jeffreys. He used a satellite DNA as probe that shows very high degree of polymorphism. It was called as Variable number of Tandem Repeats (VNTR). The VNTR belongs to a class of satellite. DNA referred as a mini satallite since DNA from any tissue (such as saliva, skin, bone,blood, sperm etc.) from an individual shows the same degree of polymorphism, they become use tool in forensic applications.
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