The making of the fittest : DNA and the ultimate forensic record of evolution

DNA, the genetic blueprint of all creatures, is a stunningly rich and detailed record of evolution.

Every change or new trait, from the gaudy colors of tropical birds to our color vision with which we admire them, is due to changes in DNA that leave a record and can be traced.

Just as importantly, the DNA evidence has revealed several profound surprises about how evolution actually works.