• species
  • Polyploidy may, in fact, result in the creation of a new species, as in the case of the plant salsify, in which two new tetraploid species of this plant developed from combinations of the original three species. (thesourcenatural.com)
  • Here we review how fluorescence in situ hybridisation (FISH) and genomic in situ hybridisation (GISH) have been applied to: 1) studies of interspecific hybridisation and polyploidy in nature, 2) analyses of phylogenetic relationships between species, 3) genetic mapping and 4) analysis of plant breeding materials. (mdpi.com)
  • According to Moran, a large number of species have popped into existence through hybridization and polyploidy rather than through Darwinian evolution. (wordpress.com)
  • Referring to the second volume ( Pteridophytes and Gymnosperms ) of the Flora of North America , published in 1993, which was the first scientific treatise on plants to include reticulograms, Moran wrote: "Of the 420 species of ferns and lycophytes described in the treatise, about a hundred originated as hybrids and later became fertile through polyploidy" (ibid. (wordpress.com)
  • Often, however, polyploidy steps in to work with hybridization to create new species within the greater fern miyn . (wordpress.com)
  • This fits in well with a Genesis framework: after the original creation of plants "according to their miyn /genus/kind," the fern miyn/genus began to spread across the globe, undergoing a combination of hybridization and polyploidy as the years progressed, with each new fern species spreading slightly farther than the geographical range of its parent species. (wordpress.com)
  • Appearing in the fossil record, this would certainly create the impression that these new species sprang up as the result of evolution, when it could just as well have been what is still occurring today for scientists to witness and report on: the creation of new species through hybridization that produces viable offspring via polyploidy. (wordpress.com)
  • Polyploidy occurs in some animal s, such as goldfish , salmon , and salamander s, but is especially common among fern s and flowering plant s, including both wild and cultivated species . (askdefine.com)
  • Polyploidy is pervasive in plants and some estimates suggest that 30-80% of living plant species are polyploid, and many lineages show evidence of ancient polyploidy (paleopolyploidy) in their genomes. (wikipedia.org)
  • Genes
  • Adams KL, Cronn R, Percifield R, Wendel JF (2003) Genes duplicated by polyploidy show unequal contributions to the transcriptome and organ-specific reciprocal silencing. (springer.com)
  • plants
  • Plants are especially prone to polyploidy, with some scientists estimating that up to 80% of flowering plants may have this trait. (wisegeek.com)
  • The broad range in estimates for angiosperm polyploidy is due to a lack of knowledge about whether these plants are ancient polyploids, or whether more recent events have caused the polyploidy we observe today. (ualberta.ca)
  • This may explain why plants in several families, which lack endosperm in their mature seeds, have a higher frequency of polyploidy than other taxa. (ualberta.ca)
  • From the start of the discussion, it was clear most people (including, it would appear, the authors of the focal paper) seemed to have difficulty articulating what the central questions of biological interest relating to polyploidy in plants really were. (ualberta.ca)
  • Polyploidy is one of the major evolutionary forces in plants and in particular in the largest angiosperm family, the Asteraceae. (ingentaconnect.com)
  • genus
  • It is not unreasonable to suppose that such extraordinary polyploidy has contributed to the separation of this genus from its related genera within the family-all from the one original created kind. (wordpress.com)