News tagged with dna testing

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Blood test reveals skin cancer spread

A simple blood test could be used to identify patients whose melanoma – the most serious form of skin cancer – has started to spread to other parts of the body, according to research presented at the National Cancer Research ...

Nov 04, 2013
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EU health commissioner favours more tests for horsemeat

The EU's health commissioner is in favour of a new round of Europe-wide DNA tests to check for the presence of horsemeat in beef products, following a scandal earlier this year that rocked confidence in food safety standards.

Jun 10, 2013
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DNA profiling

DNA profiling (also called DNA testing, DNA typing, or genetic fingerprinting) is a technique employed by forensic scientists to assist in the identification of individuals on the basis of their respective DNA profiles. DNA profiles are encrypted sets of numbers that reflect a person's DNA makeup, which can also be used as the person's identifier. DNA profiling should not be confused with full genome sequencing.

Although 99.9% of human DNA sequences are the same in every person, enough of the DNA is different to distinguish one individual from another. DNA profiling uses repetitive ("repeat") sequences that are highly variable, called variable number tandem repeats (VNTR). VNTRs loci are very similar between closely related humans, but so variable that unrelated individuals are extremely unlikely to have the same VNTRs.

The DNA profiling technique was first reported in 1985 by Sir Alec Jeffreys at the University of Leicester in England, and is now the basis of several national DNA databases.

This text uses material from Wikipedia, licensed under CC BY-SA

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