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Chordate


chordate -- n. An animal with a notochord (a cartilaginous rod that extends the length of the body), dorsal hollow nerve cord (a fluid-filled tube that runs the length of the body), gill slits or pouches, and a tail at some stage in its life cycle.
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Chordates
Lancelet Branchiostoma lanceolatum
Zebrafish Danio rerio
Medakafish Oryzias latipes
Fugu Takifugu rubripes
Frogs Xenopus laevis
Chicken Gallus gallus
Mouse Mus musculus (Mammalian embryogenesis) ...
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Chordates
Lancelet Branchiostoma lanceolatum
Zebrafish Danio rerio
Frogs Xenopus laevis
Chicken Gallus gallus
Mouse Mus musculus (Mammalian embryogenesis) ...
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chordates: animals with rods along their backs, including reptiles, amphibians, birds, and mammals.
chromatid: homologous chromosomes joined to each other at the centromere; present during the prophase of mitosis.
chromatin: compacted DNA and protein.
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Chordates have a dorsal rather than ventral nervous system. Several evolutionary trends occur in chordates: spinal cord, continuation of cephalization in the form of larger and more complex brains, and development of a more elaborate nervous system.
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chordate - organism having a notochord at some stage of development - a rigid cartilaginous rod in the back extending from anterior to posterior; this group includes the vertebrates.
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Chordates (Phylum Chordata)
During their embryonic development, all chordates pass through a stage called the pharyngula [View] with these features: ...
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chordate
(kor-date)
A member of a diverse phylum of animals that possess a notochord; a dorsal, hollow nerve cord; pharyngeal gill slits; and a postanal tail as embryos.
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chordates Animals that display a hollow dorsal nerve cord, gill slits, and a notochord. Includes the protochordates and the vertebrates.
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hh genes have been identified in several other invertebrate species including the leech and sea urchin (Chang et al.1994) as well as in the cephalochordate amphioxus (Shimeld 1999).
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The Ciona genome is one of the smallest and most compact of all chordate genome and Ciona tadpole represents the most simplified chordate body plan (the ciona notochord contain only 40 cells).
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Ancient chordates-forerunners of fish, of frogs, of chickens, of humans-had a single Hox cluster with probably thirteen genes in them.
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: A major phylum in the Kingdom
Animalia
. A chordate is characterized by the presence of a dorsal notochord at some stage of development and a dorsal hollow nerve chord.
Chromatid ...
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Sponges, Cnidarians, Flatworms, Roundworms
Mollusks, Annelids, Arthropods
Echinoderms, Chordates
Frog Dissection
Animal Tissues ...
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A group of Metazoans that exhibit indeterminate, radial cleavage and that develop a mouth independent of, and at some distance from, the blastopore. (Echinoderms and Chordates and related minor phyla).
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