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DIVERGENT DESTINIES. "Postmeiosis male and female developmental pathways diverge significantly, with events in the ovule being driven principally by hormone gradients and pollen development requiring defined phases of tapetal activity" as well as soma-germline continued collaboration. http://www.sciencedirect.com/science/article/pii/S1534580713000427 View in LinkedIn

PARASITIC TRANSPOSABLE ELEMENT "silencing and/or the establishment of a specific heterochromatin state may thus be essential for meiotic progression in multicellular eukaryotes and perhaps determine whether cells follow a sexual or apomictic developmental pathway." http://www.sciencedirect.com/science/article/pii/S1534580713000427 View in LinkedIn

EPIGENETIC INTERACTIONS. "Both male and female reproductive cell lineages undergo meiosis to generate haploid spores that divide to form gametophytes, and a large number of genes have been identified regulating meiosis in Arabidopsis, many of them homologs of yeast meiotic genes. The principal interactions currently known to take place between the soma and germ cells at this time are, however, epigenetic." http://www.sciencedirect.com/science/article/pii/S1534580713000427 View in LinkedIn

DRASTIC CHANGE OF FUNCTION. "After the transition of the apex from vegetative to reproductive growth, reproductive cell lines of flowering plants are initiated in sex-specific lateral organs, the stamens and carpels." http://www.sciencedirect.com/science/article/pii/S1534580713000427 View in LinkedIn

TWO-WAY DIALOGUE. "That helper cells exert control over the reproductive cell line development is not surprising; however, evidence is accumulating that germ cells themselves regulate development of their helper populations in a complex two-way conversation, extending from the beginnings of the reproductive cell lineage in the sporophyte to the maturation of the gametes within the gametophyte." http://www.sciencedirect.com/science/article/pii/S1534580713000427 View in LinkedIn

SPOROPHYTE DOMINANCE POPULAR. “95% of all plants have a dominant sporophyte generation in their life cycle. Pollen, produced by the sporophyte, allowed seed plants to adapt to dry land.” https://lnkd.in/dGN5WNg View in LinkedIn

SPONGE LONGEVITY GENE CLONED. "One gene, SDLAGL, was identified in the marine sponge Suberites domuncula whose deduced polypeptide showed high sequence similarity to the longevity assurance genes from other Metazoa." https://lnkd.in/ekmRrmm View in LinkedIn

BIG IMPACT SYSTEM. "If you have an alien species or fantasy race and you want to give them a funky reproductive characteristic (that could easily have massive effects on the development of their society), alternation of generations could be one way to go." https://www.reddit.com/r/worldbuilding/comments/3iq3xw/worldbuilding_biology_lesson_alternation_of/ View in LinkedIn

GENE SHORTLIST. “We longitudinally confirmed 11 positive regulators of lifespan; these genes decrease C. elegans longevity when inactivated post-developmentally. We confirm 30 new LAGs identified through network analysis of C. elegans and human candidates.” http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0048282 View in LinkedIn

THE WHY. "You may ask why plants even bother with such an odd and complicated life cycle. First, going through a haploid-only stage allows for the weeding out or removal of bad genes. Second, going through a diploid stage allows for genetic variation. Both of these help improve the overall survival of the plant species." Thirdly, it allows the zygote to be dormant until favorable conditions occur. http://study.com/academy/lesson/alternation-of-generations-the-gametophyte-and-sporophyte.html View in LinkedIn