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alternation of generations
al·ter·na·tion of gen·er·a·tions


noun 
Definition:
 
alternating forms of reproduction: the existence in the life cycle of an organism of two or more alternating forms or reproductive modes, e.g. sexual and asexual cycles
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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