Could your pee reveal your youth?
Genes are the blueprints of life. Genes control everything from hair color to blood sugar by telling cells which proteins to make, how much, when, and where. Genes exist in most cells. Inside a cell is a long strand of the chemical DNA (deoxyribonucleic acid). A DNA sequence is a specific lineup of chemical base pairs along its strand. The part of DNA that determines what protein to produce and when, is called a gene.
First established in 1985 by Sir Alec Jeffreys, DNA testing has become an increasingly popular method of identification and research. The applications of DNA testing, or DNA fingerprinting within forensic science is often what most people think of when they hear the phrase. Popularized by television and cinema, using DNA to match blood, hair or saliva to criminals is one purpose of testing DNA. It is also frequently used for other benefits, like wildlife studies, paternity testing, body identification, and in studies pertaining to human dispersion.While most aspects of DNA are identical in samples from all human beings, concentrating on identifying patterns called microsatellites reveals qualities specific and unique to the individual. During the early stages of this science, a DNA test was performed using an analysis called restriction fragment length polymorphism. Because this process was extremely time consuming and required a great deal of DNA, new methods like polymerase chain reaction and amplified fragment length polymorphism have been employed.The benefits of DNA testing are ample. In 1987, Colin Pitchfork became the first criminal to be caught as a result of DNA testing. The information provided with DNA tests has also helped wrongfully incarcerated people like Gary Dotson and Dennis Halstead reclaim their freedom.
The finding settles a 111-year-old mystery that began when excavators exhumed the two mummies in Deir Rifeh.
Drinking alcohol can cause damage to DNA that can lead to an increase in cancer risk, according to a new study done in animals.
Genetic analysis of a baby's remains dating to 11,500 years ago offers new details in the origin story for people who first settled in the Americas.
Scientists have converted a bunch of microbes into what they've dubbed the "world's smallest tape recorder."
Growing old is a natural part of life, but that hasn't stopped people from turning to anti-aging skin treatments, specialized diets and other tricks to try to reverse the effects of aging.
Scientists are still trying to make sense of something extremely weird that happened between a pair of Ambystoma salamanders millions of years ago.
An oddball extinct animal discovered nearly 200 years ago recently confirmed its place on the mammal family tree, thanks to newly discovered DNA evidence.