Scienceblogtwo

With the help of physics and a small magnet, researchers have identified a new structure for telomeric DNA. Many experts believe that telomeres hold the answer to extending life. They shield genes from harm, although they shrink a little bit with each cell division. If they shrink too much, the cell perishes. This ground-breaking discovery will improve our understanding of disease and aging. Physics is typically not the first branch of knowledge that comes to mind when discussing DNA. But one of the researchers that discovered the novel DNA structure is John van Noort from the Leiden Institute of Physics (LION) in the Netherlands. He conducts biological studies using physics techniques as a biophysicist. He was approached to assist in the study of the DNA composition of telomeres by biologists from Nanyan Technological University in Singapore after their attention was drawn to this as well. On September 14, the findings were published in the peer-reviewed journal Nature. Our chromosome...

A barrier island off the coasts of Virginia and Maryland has had its history rewritten by an abandoned Caribbean colony unearthed centuries later and a case of identity confusion in the archaeological record. These ostensibly unrelated strands were knitted together when Nicolas Delsol, a postdoctoral researcher at the Florida Museum of Natural History, set out to investigate ancient DNA extracted from cow bones found in archaeological sites. Delsol sought to understand the origins of cattle domestication in the Americas, and he found the answer in the genetic data contained in thousands of year-old teeth. They did, however, also have a surprise. It was a happy accident, he claimed. "For my Ph.D., I sequenced mitochondrial DNA from fossil cow teeth, and when I evaluated the sequences, I noticed something was really wrong with one of the specimens." The DNA of one of the earliest horses brought to the Americas, represented by this tooth, is helping to rewrite the history of the...

According to senior author Manel Esteller of the Josep Carreras Leukemia Research Institute in Barcelona, Spain, "our study provides a rare insight into human likeness by showing that people with extreme lookalike faces share common genotypes, whereas they are discordant at the epigenome and microbiome levels." "Genomics groups them together, while the rest differentiates them," The growth of the World Wide Web and the ability to share human images globally have led to a rise in the number of genetically unrelated individuals who have been discovered online as doubles or virtual twins. Esteller and his research group sought to characterize random people who objectively share face traits on a biological level in the current study. They obtained human doubles for this purpose from François Brunelle's photography work. Since 1999, he has been a Canadian artist who has collected images of lookalikes from all around the world. 32 identical couples' headshot photo...