i read the following passage in a recent article in New Scientist :
"The line that led to bonobos and chimps split from the one that led to Homo sapiens around 6 million years ago, and bonobos and chimps parted about 2.5 million years ago. However, genetic studies suggest we are slightly closer to bonobos than we are to chimps, ..."
now this puzzles me : if bonobos and common chimps split from one another 3.5 million years after humans did, shouldn't the genetic distance between them and us be the same for both types of chimp ? or am i missing something ?