A Carolina Essentials™ Investigation Total Time: 30 mins Prep: 30 mins | Activity: 20 – 30 mins Life Science 5-8 Elementary |…
A Carolina Essentials™ Investigation Total Time: 30 mins Prep: 30 mins | Activity: 20 – 30 mins Life Science 5-8 Elementary |…
Background Evolutionary relationships among the 11 extant orders of insects that undergo complete metamorphosis, called Holometabola, remain either unresolved or contentious, but are extremely important as a context for accurate comparative biology of insect model organisms. The most phylogenetically enigmatic holometabolan insects are Strepsiptera or twisted wing parasites, whose evolutionary relationship to any other insect order is unconfirmed. They have been controversially proposed as the closest relatives of the flies, based on rDNA, and a possible homeotic transformation in the common ancestor of both groups that would make the reduced forewings of Strepsiptera homologous to the reduced hindwings of Diptera. Here we present evidence from nucleotide sequences of six single-copy nuclear protein coding genes used to reconstruct phylogenetic relationships and estimate evolutionary divergence times for all holometabolan orders. Results Our results strongly support Hymenoptera as the earliest branching holometabolan lineage, the monophyly of the extant orders, including the fleas, and traditionally recognized groupings of Neuropteroidea and Mecopterida. Most significantly, we find strong support for a close relationship between Coleoptera (beetles) and Strepsiptera, a previously proposed, but analytically controversial relationship. Exploratory analyses reveal that this relationship cannot be explained by long-branch attraction or other systematic biases. Bayesian divergence times analysis, with reference to specific fossil constraints, places the origin of Holometabola in the Carboniferous (355 Ma), a date significantly older than previous paleontological and morphological phylogenetic reconstructions. The origin and diversification of most extant insect orders began in the Triassic, but flourished in the Jurassic, with multiple adaptive radiations producing the astounding diversity of insect species for which these groups are so well known. Conclusion These findings provide the most complete evolutionary framework for future comparative studies on holometabolous model organisms and contribute strong evidence for the resolution of the 'Strepsiptera problem', a long-standing and hotly debated issue in insect phylogenetics.
1852 rare antique original organ of senses animals print, vintage comparative anatomy steel engraving, ear taste touch smell eye sight plate. This original antique good quality french of different animals organs of senses steel engraving was published in 1852. SUBJECT: Comparative anatomy.Organ of senses. PAPER SIZE : Inches 7.7" x 5.2" (19.5 x 13.2cm). AGE: 164 years. CONDITION: Good condition. Plate printed on good paper. Reverse side is blank. For more antique SENSE ORGANS, please click on: https://www.etsy.com/shop/zoetropeantiqueprint?ref=hdr_shop_menu&search_query=SENSE+ORGANS For more old prints of ANATOMY, please click on: https://www.etsy.com/shop/zoetropeantiqueprint/searchsearch_query=anatomy&order=date_desc&view_type=gallery&ref=shop_search Some imperfections are habitual in antique prints.The print shows some wear and slight staining by the passage of time but it is in good conditions. The colors you see on your screen may vary due to differences in monitor resolution.Please double click "zoom" under the image for an enlarged view. This is an original antique print from 1852 and not a modern reproduction. This decorative illustration can be easily framed or be used as ephemera for collages. I do not charge shipping costs for additional prints in the same order. I send worldwide. I pack the prints in a bubble envelope with a cardboard inside the envelope for reinforce the package. Please feel free to email us with any questions or request additional photos, I am happy to assist you. Thanks for looking! Go back to de shop: https://www.etsy.com/shop/zoetropeantiqueprint
How to do face reading or physiognomy. Physiognomy is the belief that you can look at someone's facial features and get a sneak peak into their personality. Read your face!
The Ascidiacea are the Sea Squirts or Tunicates and they make up the bulk of the species found within the Urochordata.
