Flies in the face of adversity
Fellowes, M. D. E. and Hutcheson, K. (2001) Flies in the face of adversity. Biologist, 48 (2). pp. 75-78. ISSN 0006-3347
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All organisms face attack from many natural enemies and all in turn have some means of defence. Can resistance evolve, and if it can, why doesn't it? Recent work on fruit flies and their parasitic wasps has shed light on these questions