Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of a numerous animals of the group Deuterostomia, in which the anus develops from the first opening in the embryo and the mouth develops later, and including the echinoderms, hemichordates, and chordates.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun biology any
animal in which the initialpore formed duringgastrulation becomes theanus , and the second pore becomes themouth
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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E.g. the genes are found in sea urchins and other non-vertebrate deuterostome genomes.
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This evidence came in only in 2006, but there is actual direct evidence that the transposon-derived ancestors of the RAG genes were in deuterostome genomes * before* they were used to generate receptor diversity.
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This evidence came in only in 2006, but there is actual direct evidence that the transposon-derived ancestors of the RAG genes were in deuterostome genomes * before* they were used to generate receptor diversity.
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E.g. the genes are found in sea urchins and other non-vertebrate deuterostome genomes.
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In a deuterostome, the anus forms before the mouth.
What I learned this semester e 2008
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In a deuterostome, the anus forms before the mouth.
Archive 2008-12-01 e 2008
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This might end up being re-interpreted as a stem-group deuterostome or even arthropod the latter was my first thought upon seeing the diagrams
Steve Steve and end of the Cambrian Explosion as we know it (part 1) - The Panda's Thumb 2006
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This marine worm, first described in 1949 as an acoel flatworm and later claimed as either an early metazoan offshoot or a primitive deuterostome, has recently been affiliated with primitive bivalve molluscs, based upon a study of gamete development oogenesis and an analysis of sequence data from both 18S rRNA and mitochondrial genes.
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This marine worm, first described in 1949 as an acoel flatworm and later claimed as either an early metazoan offshoot or a primitive deuterostome, has recently been affiliated with primitive bivalve molluscs, based upon a study of gamete development oogenesis and an analysis of sequence data from both 18S rRNA and mitochondrial genes.
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They are a sister phylum to the chordates, and the similarities and differences between us tell us something about our last common ancestor, the ur-deuterostome.
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