According to estimates by the World Health Organization, in 2013 on the order of 35 million people were infected with HIV worldwide (http://www.who.int/gho/hiv/en/). Globally, about 1.5 million people are believed to have died from AIDS-related diseases in that...
Geneticists have recognized for some time that many genes exhibit pleiotropy, meaning that one mutation can manifest in two or more distinguishable phenotypic effects. In a fascinating study recently published in Science [2014 Jan 10;343(6167):152-7....