The domestication of dogs may have inadvertently caused harmful genetic changes, a UCLA-led study suggests. Domesticating dogs from gray wolves more than 15,000 years ago involved artificial selection and inbreeding, but the effects of these processes on dog genomes have been little-studied. UCLA researchers analyzed the complete genome sequences of 19 wolves; 25 wild dogs from 10 different countries; and…
While many believe behavior is largely defined by genetic makeup and environmental factors, new research suggests certain drugs can have a life-altering, permanent influence over an individual’s character. The study, out of the University of Pennsylvania, experimented with changing the social behavior of Florida carpenter ants by injecting a drug into their brains, each one playing a different role in the colony. The researchers focused…
A team of geneticists from Trinity College Dublin and archaeologists from Queen’s University Belfast has sequenced the first genomes from ancient Irish humans, and the information buried within is already answering pivotal questions about the origins of Ireland’s people and their culture. The team sequenced the genome of an early farmer woman, who lived near Belfast some 5,200 years ago,…
A group of scientists led by Imperial College London researcher Michael Johnson has identified two ‘gene networks’ associated with human cognitive abilities. “We know that genetics plays a major role in intelligence but until now haven’t known which genes are relevant. This research highlights some of genes involved in human intelligence, and how they interact with each other,” said Dr…
Our vision and hearing aren’t as reliable as we might think, according to a study by life scientists at UCLA. “Our basic sensory representation of the world — how information from our eyes and ears is processed by neurons in the brain — is inaccurate,” said Ladan Shams, an associate professor of psychology in the UCLA College and senior author…
To keep old trains running, operators had to keep a firm grip on a dead man’s switch. If the operator became incapacitated or, well, dead, his hand would loosen, the brakes would engage, and the train wouldn’t turn into a runaway—no active intervention required. That was 20th century engineering. In the 21st century, where scientists are as likely to engineer…