Environmentally constrained mutation and adaptive evolution in Salmonella.

Abstract excerpt

The relationship between environment and mutation is complex [1]. Claims of Lamarkian mutation [2] have proved unfounded [3-5]; it is apparent, however, that the external environment can influence the generation of heritable variation, through either direct effects on DNA sequence [6] or DNA maintenance and copying mechanisms [7-10], or as a consequence of evolutionary processes [11-16]. The spectrum of...

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