Viruses attached to a fragment of a bacterial cell wall. “Viruses modulate the function and evolution of all living things,” scientists wrote last year. “But to what extent remains a mystery.”
A normal mitochondria (left) contain distinctive folds known as cristae, but these folds are lost in damaged or dysfunctional mitochondria (right).
A team of Penn State scientists have discovered a “maternal age effect” that could be used to predict the accumulation of mitochondrial DNA mutations in maternal egg cells — and the transmission of these mutations to children — could provide valuable insights for genetic counseling. These mutations cause more than 200 diseases and contribute to others such as diabetes, cancer, Parkinson’s disease, and Alzheimer’s disease.
Father’s age is linked to increased genetic risk.
Solid evidence has been found by scientists that older men have more random mutations in their sperm cells. They’re warning that can cause autism, schizophrenia and a long list of other genetic diseases in their offspring.
Even though humans are still evolving, don’t expect any winged mutants.
On TV shows like “Heroes” and movies like “X-Men, ordinary people seem to evolve to have extraordinary capabilities. But people in real life don’t have genetic mutations that give rise to extraordinary capabilities such as telepathy or wings. But human evolution is still happing according to scientists. Proceedings of the National Academy of Science has published a new study that offers some if the best evidence so far.
Scientists claim they have come up with an entirely new way to rewrite the genetic code – reversing any flaws or faults.
Genetic diseases result from flaws in the body’s DNA that lead to the cells not functioning or developing as they should. But, the genetic faults that cause diseases such as cystic fibrosis, muscular dystrophy and some cancers could be repaired in a new technique described as a “miracle of modern medicine.”
Researchers produce new insights into what triggers migraines.
The researchers, who looked at the genetic make up of more than 50,000 people, have produced new insights into what triggers the attacks and they hope they will open the door to new treatments and drugs preventions.
New discovery could lead to early diagnosis and treatment of Alzheimer’s disease.
A discovery made by researchers at McGill University and the affiliated Lady Davis Research Institute for Medical Research at Montreal’s Jewish General Hospital offers new hope for the early diagnosis and treatment of Alzheimer’s disease.
The figure summarizes the death and resurrection of Human IRGM gene.
Researchers have discovered that a long-defunct gene was resurrected during the course of human evolution. This is believed to be the first evidence of a doomed gene – infection-fighting human IRGM – making a comeback in the human/great ape lineage.
Dividing cancer cells
Every year, millions of people are diagnosed with cancer – a remarkably high number. But what about the flipside of those statistics? That is, two out of three people never get cancer, and more than half of heavy smokers don’t get cancer, either. A recent study points out this overlooked fact, and suggests that researchers might discover something by asking why so many people are resistant to the often deadly disease.
Once impenetrable, the individual genetic code is becoming an open book thanks to kits that scan for genes linked to scores of traits and diseases, from bladder cancer and baldness to male infertility and memory loss.
With obesity rates on the rise, scientists have discovered six new obesity genes that may be responsible for appetite control and eating problems.