Letter F

Fingerprint

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<B>1.</B> The characteristic dermal ridges on the finger.

This is the original meaning of fingerprint.

<B>2.</B> The characteristic pattern of the peptide fragments of a protein that have been subjected to electrophoresis and, at a right angle, chromatography.

Peptide fingerprinting was invented by Vernon Ingram in 1957. <B>3.</B> The characteristic pattern of DNA fragments identified by Southern hybridization or by PCR (polymerase chain reaction).

DNA fingerprinting was invented by Alec Jeffreys in 1984

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