A burglar in a huff forgot to wipe off his blood stains from the place of crime where he was involved in a theft. Name the technique which can help in identifying the burglar from the blood stains. Describe the technique.

Open in App

Solution

DNA fingerprinting is a forensic technique which identifies the individuals by their DNA characteristics. The principle is that no two individuals share exact same nucleotide sequence, just like fingerprints, hence the name DNA fingerprinting. The first step in DNA fingerprinting is the extraction of usable DNA followed by its digestion with restriction enzymes to produce the restriction fragments length polymorphisms or RFLPs which are then sorted according to size by gel electrophoresis. The sorted DNA fragments are then transferred from the gel to the surface of the nylon via southern blotting. Finally, radioactive probes are washed over the nylon surface to allow their joining to any DNA fragments of the same composition thereby matching different DNA samples.

Suggest Corrections

Similar questions

Q. Blood stains are found at the site of a murder. If DNA profiling technique is to be used for identifying the criminal, which of the following is ideal for use?

Q. Blood stain component to be used for DNA profiling technique is

Q. Which technique of microscopy does not involve use of stains?

Blood stains are found at a scene of crime by the forensic team. If DNA profiling technique is to be used for identification of the criminal, which of the following is ideal for use?

In the forensic science they use the blood stains to identify whether the victim is male or female .if the victim has got blood transfusion from another person .while checking the blood there would be result shows sex of the transferred blood .who they can identify the victim correctly..

Join BYJU'S Learning Program