News tagged with dna testing

Related topics: test

Final chapter to 60-year-old blood group mystery

Researchers have solved a 60-year-old mystery by identifying a gene that can cause rejection, kidney failure and even death in some blood transfusion patients. In this study, published in Nature Genetics online ...

Apr 07, 2013
popularity 5 / 5 (9) | comments 0 | with audio podcast

New insights into how genes turn on and off

Researchers at UC Davis and the University of British Columbia have shed new light on methylation, a critical process that helps control how genes are expressed. Working with placentas, the team discovered that 37 percent ...

Mar 27, 2013
popularity 5 / 5 (4) | comments 0 | with audio podcast

Fast way to measure DNA repair

Our DNA is under constant attack from many sources, including environmental pollutants, ultraviolet light, and radiation. Fortunately, cells have several major DNA repair systems that can fix this damage, ...

Apr 22, 2014
popularity 3.7 / 5 (3) | comments 0

Researchers discover enzyme behind breast cancer mutations

Researchers at the University of Minnesota have uncovered a human enzyme responsible for causing DNA mutations found in the majority of breast cancers. The discovery of this enzyme – called APOBEC3B – may change the way ...

Feb 06, 2013
popularity 4.5 / 5 (2) | comments 1 | with audio podcast

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