Counting heads or measuring space?

Bacteria can “talk” to each other: by using signal substances they inform their neighbours as to whether or not it is worth switching certain genes on or off. This communication between bacterial cells is essential for the adaptation to changing environments and for the survival. What exactly do bacteria learn from the signal substances?

If you want to include this story in your blog, copy and paste this formatted text:

<p><a href="http://www.physorg.com/news94740855.html">Counting heads or measuring space?</a></p> <p>Bacteria can “talk” to each other: by using signal substances they inform their neighbours as to whether or not it is worth switching certain genes on or off. This communication between bacterial cells is essential for the adaptation to changing environments and for the survival. What exactly do bacteria learn from the signal substances? </p>