Keywords |
  • Zoology,
  • Zoology

Triploblastic

Triploblastics include all metazoans that have three layers during embryonic development:

In addition, triploblastics have a central nervous system and a forward, backwards and dorsal orientation, as well as ventral, which has led to the development of bilateral symmetry. This organisation occured at the same time as the development of homeotic genes.

Arthropods, like this fossil trilobite, are triblastics. © kevinzim CC by-nc 2.0 Arthropods, like this fossil trilobite, are triblastics. © kevinzim CC by-nc 2.0


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