Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Plural form of placozoan.

Etymologies

Sorry, no etymologies found.

Examples

  • Last year Signorovitch also spied some egglike structures, and when she did genetic tests on her placozoans, she found evidence of sex as incontrovertible as a stain on a blue dress.

    Algae: So Has It Called Yet?

  • Sexual reproduction always mixes up DNA, and, as Signorovitch reports in a recent Proceedings of the National Academy of Sciences, placozoans have jumbled genes.

    Algae: So Has It Called Yet?

  • Many marine invertebrates reproduce by budding, and since scientists never observed placozoans in coitus, they assumed the creatures were asexual, too.

    Algae: So Has It Called Yet?

  • It is not clear whether p53 has the same function in placozoans.

    New Scientist - Online News

  • Philippe (Université de Montréal, Canada), Gert Wörheide (LMU Munich, Germany) and Michael Manuel (University of Paris, France) performed the most comprehensive study to date and investigated 128 genes from a total of 55 species - including nine poriferans, eight cnidarians, three ctenophores and the single known species of placozoans.

    Science Blog - Science news straight from the source

  • Yet placozoans have a version of p53, also known as TP53, that is strikingly similar to ours, says

    New Scientist - Online News

  • "Since the comb jellies already have nerve and muscle cells, this would suggest that these features developed several times independently in animal history, or that they were lost in sponges and placozoans."

    Latest Articles

  • "Since the comb jellies already have nerve and muscle cells, this would suggest that these features developed several times independently in animal history, or that they were lost in sponges and placozoans," explains the LMU researcher.

    Science Blog - Science news straight from the source

  • Hence The complex history of cnidarian Hox genes and its bearing on early Hox evolution concerning the presence of true Hox genes in cnidarians and bilaterians and their probable absence from sponges, ctenophores and placozoans, leading to the conclusion that this gene family originated in an exclusive cnidarian / bilaterian ancestor, or was lost in other metazoan lineages

    PLoS ONE Alerts: New Articles

  • After comparing the sequences of 104 Trichoplax genes with their counterparts in other organisms, they concluded that placozoans aren't the oldest animals; they branched off after sponges but before cnidaria.

    Darwiniana

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