A little over a year ago, Bordenstein, a biologist at Vanderbilt University in Nashville, Tennessee, and his then-graduate student, Robert Brucker, mated two incompatible species of wasp in the lab, creating a hardy hybrid that lived when most others died. Normally, when members of two related species of parasitic wasps in the genus Nasonia, N. giraulti and N. longicornis, mate…
Researchers at the University of California, San Diego School of Medicine have mapped the transmission network of human immunodeficiency virus (HIV) in San Diego. The mapping of HIV infections, which used genetic sequencing, allowed researchers to predictively model the likelihood of new HIV transmissions and identify persons at greatest risk for transmitting the virus. The findings are published online in…
Courts may soon face the challenge of determining whether genetics can be linked to criminal behavior. The “my genes made me do it” defense is not solely reserved for Law and Order SVU. At least, not for long. As science continues to tell us more and more about genetics, geneticists and medical ethicists believe it’s only a matter of time…
The young lemur named Eugenius started to get sick. Very sick. He was lethargic, losing weight and suffering from diarrhea. Duke Lemur Center veterinarians soon pinpointed the cause of his illness: Eugenius tested positive for Cryptosporidium, a microscopic intestinal parasite known to affect people, pets, livestock and wildlife worldwide. In humans, thousands of cases of Cryptosporidium are reported in the…
Why do our bodies age at different rates? Why can some people run marathons at the age of 70, while others are forced to use a walker? Genes are only part of the answer. A trio of scientists from the University of North Carolina argue in a new paper that more work needs to be done on “gerontogens” — factors,…
Dolly the sheep enjoyed a brief and highly publicized life as the first mammal cloned from an adult cell before succumbing to lung disease in 2003 at age 6. But an attempt to patent Dolly, and lay commercial claim to animals produced by cloning, survived much longer. But that nearly 10-year-long saga also appears to have ended last week when…