单词	urochordate
释义	urochordate /jʊərə(ʊ)ˈkɔːdeɪt / Zoology noun A marine invertebrate of the group Urochordata, which comprises the tunicates.Chordates are divided into urochordates, cephalochordates, and vertebrates.... For instance, adult urochordates are typically sessile, while many vertebrates are quite active. Their report that urochordates are comprised of 4 discrete lineages holds interesting implications for understanding the evolution of tadpole morphology and chordate life history. adjective Relating to or denoting urochordates.This suggests that the disruption observed is specific to the urochordate lineage.... These data further support the hypothesis that duplication and differentiation giving rise to cardiac and skeletal genes occurred following divergence of the urochordate and vertebrate ancestors. The phylogenic analysis implies that the multiple actinin isoforms found in modern vertebrates arose after the divergence of the vertebrate and urochordate lineages.
随便看	hogs' sty hogsteer hogs trough hog's trough hogs' trough hogsty hogsucker hog's yoke hog tapir hog-tie hog-tight hog train hog trough hog-tub hog wallow hogwash hogweed hog-wild hog wool hogwort hog yoke hoha Hohenstaufen Hohenzollern Hohhot

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