In what sounds like a plot line from a BioShock game, a team of biologists has coaxed an animal into growing a new head and brain resembling those of a different species. The bizarre accomplishment adds to a growing body of research highlighting the importance of non-DNA factors—collectively known as the… »
Today, a study presented at the annual meeting of the American Society of Human Genetics tied male homosexuality to chemical markers on DNA that affect how genes are expressed. »
Research on the biological origins of human sexual orientation remains controversial (and poorly funded), and more than two decades of slow work is starting to reveal a much more complex process than anyone first suspected.
There are 20,000 genes in the human genome, but only a small fraction of them are active in any given cell. This video from Nature explains with beautiful clarity the system that activity, turning genes on and off. It's called the epigenome, and it's incredibly important. Now you can understand how it works, too. »
You've seen the reports that individuals with a lower economic and social status suffer from poor health more often than folks in higher tax brackets. Now, thanks to a multi-year study of rhesus macaques monkeys, researchers have found genetic changes caused by stressful environments are likely contributing to that… »
New research shows that if your grandmother or even your great-grandmother came in contact with some very common environmental chemicals, you could be suffering the consequences today in the form of male infertility, ovarian disease and the early or late onset of puberty. »
Do you prefer to run in packs or operate as a loner? Your answer is determined by your genes, a new study claims. It's a big shift in social behavior theory, since scientists previously thought the environment determined social behavior. »