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| | The Haploid-Diploid Life Cycle (Site not responding. Last check: 2007-11-07) |
 | | This alternation of generations creates a morphologically complex life cycle, depending on the similarity or dissimilarity of the GPT and SPT, the relationship of these to each other, and the nature of the spores. |
 | | There can be an alternation of similar generations, isomorphic alternation of generations, where the GPT and SPT are morphologically identical, except for the reproductive structures. |
 | | On the other hand, there can also be an alternation of dissimilar generations, heteromorphic alternation of generations, when the GPT and SPT are morphologically different. |
| www.ucmp.berkeley.edu /glossary/gloss6/altergen.html (296 words) |
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