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File:Protovsdeuterostomes.svg

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Malongosolelo
English: This diagram is showing the difference of the two major types of coelomates: the protostomes (molluscs, annelids, arthropods, ...) and deuterostomes (echinoderms, vertebrates, ...). These groups differ in several characteristics of early development; In deuterostomes blastula divisions is called "radial cleavage" because it occurs parallel or perpendicular to the major polar axis. In protostomes the cleavage is called "spiral" because division planes are oriented obliquely to the polar major axis. During gastrulation, protostomes embryos' mouth was given first by the blastopore while the anus was formed later and vice versa for the deuterostomes. As examples :
  • Squids are protostomes.
    Squids are protostomes.
  • Sea urchins are deuterostomes.
    Sea urchins are deuterostomes.
Siku
Ukaboni Chinthu chane
Mlembi WYassineMrabet✉
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(Kugwiliskaso ntchito ichi)		 GFDL and CC-BY-SA (see below)
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Protovsdeuterostomes-de.svg
Deuterostomes.png
Protostomes.png
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14 Okutobala 2009

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Siku/NyengoKachithuziVipimoMgwiliskiGanizo
sono10:22, 17 Okutobala 2009Kachithuzi kachoko nga mpha 10:22, 17 Okutobala 2009577 × 527 (1.31 MB)YassineMrabetfixing error : <s>coelome</s> coelum
16:24, 14 Okutobala 2009Kachithuzi kachoko nga mpha 16:24, 14 Okutobala 2009577 × 527 (1.31 MB)YassineMrabet{{Information |Description={{en|1=This diagram is showing the difference of the two major types of coelomates: the protostomes (molluscs, annelids, arthropods, ...) and deuterostomes (echinoderms, vertebrates, ...). T

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