Evolution in a Test Tube

In the past century scientists have gathered a wealth of evidence about the power of natural selection. But much of that evidence has been indirect. Natural selection is a process that takes place over many generations, that may affect thousands or millions of individuals, and that may be shaped by many different conditions. To document it scientists have searched for historical fingerprints. They study fossils, for example, or compare the DNA of related species.

In the late 1980s a few scientists began experimenting with microbes, hoping to observe natural selection in something closer to real time.

Fast-Reproducing Microbes Provide a Window on Natural Selection


[x]#2874 fan donderdag 28 juni 2007 @ 12:32:28