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Chordate in Medical News

Genome sequence of lancelet shows how genes quadrupled during vertebrate evolution

... a tunicate, was previously thought to belong to the the earliest chordate lineage because of the sea squirt's very simple body plan. Comparison of ... and vertebrates. "Sea squirts and their relatives have taken the basic chordate genome and simplified it in various ways, while amphioxus retains those ...

Scientists Make Major Breakthrough in Regenerative Medicine

... chordates (organisms with some level of spinal cord development), and many scientists believe that sea squirts approximate what the very first human chordate ancestor may have been like 550 million years ago. By studying this modern day representative of our evolutionary ancestor, researchers are able to ...
Chordate in Biological News

Genome sequence of small marine creature sheds light on vertebrate origins

... it also has specialized features that have developed since diverging from chordate ancestors. Reference: Holland, L.Z., et al. The amphioxus genome ... system repertoire of the vertebrate ancestor may have looked like. "Our chordate ancestors had a remarkably elaborate innate immune system, but this system ...

Dartmouth researchers find the root of the evolutionary emergence of vertebrates

... the living jawless fishes like the lamprey and the jawed fishes like the shark, but after the divergence of vertebrates from their invertebrate chordate relatives, such as the sea squirt. Co-author Donoghue adds, Most of these new genes are required for the growth of organs that are unique to ...

Stanford scientists make major breakthrough in regenerative medicine

... chordates (organisms with some level of spinal cord development), and many scientists believe that sea squirts approximate what the very first human chordate ancestor may have been like 550 million years ago. By studying this modern day representative of our evolutionary ancestor, researchers are able to ...
Chordate in Biological Definition

Brain

... cerebrospinal fluid , which circulates between layers of the meninges and through cavities in the brain called ventricles . Regions identified in chordate brains include: rhombencephalon myelencephalon medulla oblongata metencephelon pons cerebellum ...
Chordate in Biological Dictionary

Chordate

... - Recent. Yellowfin tuna, Thunnus albacares ... chordate node at Tree Of Life. chordate node at NCBI Taxonomy ... Information about chordate in the free online English dictionary and ...

Sinus venosus

... The sinus venosus is a large quadrangular cavity which precedes the atrium on the venous side of the chordate heart. In humans, it exists distinctly only in the embryonic heart, where it is found between the two venae cavae. In the adult, it is incorporated ...

Notochord

... most of ... Notochord ... notochord ... Notochord - Wikipedia, the free encyclopedia ... Notochord . • Skeletal structure in ALL chordate embryos ... No trace of notochord , nerve cord or tail (but there are pharyngeal slits) ... ...

Deuterostome

... of deuterostome species in this video from Thinkwell's online Biology series. Evaluating hypotheses of deuterostome phylogeny and chordate evolution with new ... evolutionary relationships among deuterostome subgroups by obtaining nearly ... The deuterostome phyla include ...

Chordates

... website to THE SHAPE OF LIFE, an eight-part series that takes viewers to unexplored places and answers ... indeed, all chordates , from the ... chordate n. Any of numerous animals belonging to the phylum Chordata, having at some stage of development a dorsal nerve cord, a notochord, and gill ...

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