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

serum

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erythrocytes

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leucocytes

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platelets

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Solution

The correct option is C
leucocytes

DNA fingerprinting is a technique to identify a person on the basis his DNA specificity. The technique is based on the fact that the DNA constitution of an individual carries some specific sequence of nucleotides, which do not carry any information for protein synthesis and are specific.

From the given options, leucocytes should be used to identify the criminal because they are nucleated, whereas erythrocytes are enucleated (so no DNA).

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