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How DNA can be as a useful tool in the forensic applications?

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How DNA can be as a useful tool in the forensic applications?

(a) Showing the same degree of polymorphism with hair follicles

(b) Showing different degrees of polymorphism with saliva

(c) By not possessing any hereditable information

(d) By the presence of lysozymes in it

This question was posed to me in final exam.

My question is based upon Molecular Basis of Inheritance in chapter Molecular Basis of Inheritance of Biology – Class 12

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Best answer
Correct answer is (a) Showing the same degree of polymorphism with hair follicles

Best explanation: The double helical structure of the DNA present on saliva, hair follicles, bones, blood and sperm serve as a useful took in the forensic studies. This can be done as the DNA from an individual’s tissue shows the same degree of polymorphism. These polymorphic characters are inheritable from parents to their children.

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