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Blastopore

The opening of the archenteron in the gastrula that develops into the mouth in protostomes and the anus in deuterostomes.


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Protostomes and Deuterostomes

... I am not sure if this is answering yor second question, but... Protostomes--> first, the mouth Deuterostomes--> second, the mouth The blastopore, during embryonic development, will be the mouth first in protostomes, and the anus first in deuterostomes. There are other differences as ...

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by plasmodesmata11
Mon Feb 23, 2009 12:16 am
 
Forum: Zoology Discussion
Topic: Protostomes and Deuterostomes
Replies: 4
Views: 10018

difference between blastopore and primitive streak?

blastopore is a hole. primitive streak is a furrow. See here: http://en.wikipedia.org/wiki/Primitive_streak http://en.wikipedia.org/wiki/Blastopore

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by MrMistery
Mon Feb 04, 2008 9:18 pm
 
Forum: Human Biology
Topic: difference between blastopore and primitive streak?
Replies: 1
Views: 3336

difference between blastopore and primitive streak?

Hi, Can some please explain to me the difference between a blastopore and primitive streak in embryogenesis? Thank you, L

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by cmbdii
Mon Feb 04, 2008 3:22 pm
 
Forum: Human Biology
Topic: difference between blastopore and primitive streak?
Replies: 1
Views: 3336

Kingdom Animalia Questions!!!

... yolk must last c. the number of chromosomes in the egg d. the number of chromosomes in the sperm 3. Animals in which the anus develops in from the blastopore include... a. Mollusks b. arthropods c. annelids d. chordates 4. What features of development indicate that echinoderms and chordates are ...

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by Liquidpyro
Wed Apr 12, 2006 4:17 pm
 
Forum: Zoology Discussion
Topic: Kingdom Animalia Questions!!!
Replies: 2
Views: 3172

DEFINE DEUTEROSOMES

nope, but the butt does! (arise from the blastopore) also, Phlyum Echinodermita. I think them and the Chordates are the only major phyla that are deuterostomes.

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by February Beetle
Fri Mar 24, 2006 11:14 pm
 
Forum: General Discussion
Topic: DEFINE DEUTEROSOMES
Replies: 3
Views: 3692
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