Blastoderm
... A
blastoderm is the layer of cells formed at one pole of ... the zygote divides and subdivides, forming the
blastoderm , which gradually spreads around ... Aspects of the topic
blastoderm are discussed in the following places at ...
Yolk plug
... with free online ... yolk . yolk membrane. yolk plug . yolk sac. yolk stalk. yolk -sac tumor. yolked. yolkier. yolkiest ... ... as the
blastoderm completely covers the yolk plug , defining 100%-epiboly. ... Just dorsal to the site of yolk plug closure, and usually within 10-15 min ...