The diversity of lifecycles and their role in the evolution of basic chromosome numbers in various living species

@article{Shchapova2013TheDO,
  title={The diversity of lifecycles and their role in the evolution of basic chromosome numbers in various living species},
  author={Antonina I. Shchapova},
  journal={Russian Journal of Genetics: Applied Research},
  year={2013},
  volume={3},
  pages={239-245}
}
Basic chromosome numbers (BCNs) are compared among species with different life-cycle types belonging to four divisions of Gymnospermae, three families of Angiospermae, and three Mammalia subclasses. The gymnosperm and angiosperm taxa that are characterized by alternation of haploid and diploid phases, sporic meiotic reduction, hermaphroditism, and sporophyte dominance have small BCNs: x = 7 to 14. Most of their species are polyploids. Broad BCN variation is observed among species of various… CONTINUE READING
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