TITLE

Shortening the odds against evolutionary change

AUTHOR(S)
Concar, David
PUB. DATE
September 1991
SOURCE
New Scientist;9/21/91, Vol. 131 Issue 1787, p32
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
The article discusses the study by researcher Barry Hall of the University of Rochester, New York, which shows that the bacterium Escherichia coil has a hitherto unrecognised talent, the ability to manipulate the rate at which favourable combinations of "chance" mutations appear in its genes. Hall's study broaches one of the most vexing questions of all in evolutionary biology, how adaptive changes that depend on many chance mutations ever arise. It suggests that E. coli is somehow able to leap the barriers to certain adaptations.
ACCESSION #
14718064

 

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