Researchers document second case of 'Down syndrome' in chimps

Japanese researchers have confirmed the second case known to science of a chimpanzee born with trisomy 22, a chromosomal defect similar to that of Down syndrome (or trisomy 21) in humans. The report on Kanako, a 24-year-old ...

Team identifies new 'social' chromosome in the red fire ant

Researchers have discovered a social chromosome in the highly invasive fire ant that helps to explain why some colonies allow for more than one queen ant, and could offer new solutions for dealing with this pest.