alternation of generations

alternation of generations definition - medical

alternation of generations

noun
The regular alternation of forms or of mode of reproduction in the life cycle of an organism, such as between diploid and haploid phases, or between sexual and asexual reproductive cycles. Also called metagenesis, xenogenesis.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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