By using which one of the following techniques, is DNA fingerprint done ?

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Q: 1 (CDS-II/2008)
By using which one of the following techniques, is DNA fingerprint done ?

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,16,49,23,8,18,16

keywords: 

{'dna fingerprint': [0, 0, 1, 0], 'northern blotting': [1, 0, 1, 1], 'southern blotting': [1, 0, 1, 0], 'techniques': [0, 1, 1, 2], 'elisa': [1, 0, 0, 0]}

The correct answer is option 4, Southern Blotting.

Let`s dissect each option to understand why option 4 is the correct one.

Option 1, ELISA: Enzyme-Linked Immunosorbent Assay (ELISA) is a technique used for detecting and quantifying proteins or antibodies, not DNA. Therefore, ELISA is not the technique used for DNA fingerprinting.

Option 2, RIA: Radioimmunoassay (RIA) is a technique that uses radioactive isotopes to measure the concentration of specific substances, such as hormones or drugs, in a sample. RIA is not used for DNA fingerprinting.

Option 3, Northern Blotting: Northern blotting is a technique used to study gene expression by detecting and analyzing RNA molecules. It is not used specifically for DNA fingerprinting.

Option 4, Southern Blotting: Southern blotting is a method used to detect and analyze specific DNA fragments. It involves transferring DNA from a gel to a membrane and then using labeled DNA probes to identify specific sequences. This technique is commonly used for DNA fingerprinting, making option 4 the correct answer.

Therefore, the technique used for DNA fingerprinting is Southern Blotting.

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