Blastopore

... 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 ...

See entire post

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

See entire post

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

See entire post

... 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 ...

See entire post

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.

See entire post