Assertion (A) > : DNA Finger- printing has become a powerful tool to establish paternity and identity of criminals in rape and assault cases. Reason (R) > : Trace evidences such as hairs, saliva and dried semen are adequate for DNA analysis.

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Q: 128 (IAS/2000)

Assertion (A) : “DNA Finger- printing” has become a powerful tool to establish paternity and identity of criminals in rape and assault cases.
Reason (R) : Trace evidences such as hairs, saliva and dried semen are adequate for DNA analysis.

question_subject: 

Science

question_exam: 

IAS

stats: 

0,70,12,70,10,0,2

keywords: 

{'dna analysis': [0, 1, 0, 1], 'paternity': [0, 1, 0, 0], 'trace evidences': [0, 1, 0, 0], 'rape': [0, 1, 0, 2], 'assault cases': [0, 1, 0, 0], 'semen': [0, 1, 0, 1], 'criminals': [0, 1, 1, 0], 'saliva': [2, 0, 0, 1], 'identity': [0, 1, 0, 3]}

The correct answer is "Both A and R are true, and R is the correct explanation of A."

DNA fingerprinting has indeed become a powerful tool for establishing paternity and identifying criminals in rape and assault cases. DNA analysis allows for the comparison of genetic profiles, which are unique to each individual except for identical twins. By comparing DNA samples from individuals involved in a case, such as the alleged father, child, and potential suspects, it is possible to determine if there is a biological relationship or to identify the perpetrator.

The reason provided, which states that trace evidences such as hairs, saliva, and dried semen are adequate for DNA analysis, is also true. DNA can be extracted from various biological materials, including these types of trace evidence, as they may contain cells or genetic material that can be used for analysis. Advances in DNA analysis techniques have made it possible to obtain reliable results from small and degraded samples, expanding the range of potential sources for DNA analysis.

Therefore, both the assertion and the reason are true, and the reason correctly explains why DNA fingerprinting is a powerful tool for establishing paternity and identifying criminals in rape and assault cases.