triploblastic


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triploblastic

[‚trip·lə′blas·tik]
(embryology)
Having three embryonic germ layers: an ectoderm, mesoderm, and endoderm.
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References in periodicals archive ?
The extent to which the wound-healing process of "basal animals" might be homologous to the wound healing of triploblastic animals is not yet known.
Grainyhead can be recognized by the possession of a highly conserved CP2 domain, and this transcription factor has been identified in a wide range of triploblastic animals (Moussian and Uv, 2005).
If the developmental mechanisms underlying head formation are related in hydra and the triploblastic organisms, one might expect to find some of these genes expressed in the developing hydra head.
Thus, there are some parallels in the expression pattern of genes known to regulate head formation in triploblastic animals and their homologs in hydra.
This differential expression has been shown to control the development of region-specific structures in nematodes, arthropods, and chordates, and may be a shared characteristic of triploblastic metazoan animals.
A comparison of this simple embryo-genesis with those of the more complex triploblastic metazoans would reveal those features that are common to all animals.
Our comparison of the nucleotide sequences of small-subunit rDNA for a variety of organisms indicates that the dicyemids belong among the triploblastic animals.