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cleavage->gastrulation->implantation->formation of placenta->first labor
on the 6th day
fertilization zygote divides gastrulation placenta forms
Endoderm
No, blastulation and gastrulation are distinct processes in embryonic development. Blastulation is the formation of the blastula from the zygote, while gastrulation is the process during which the three germ layers (ectoderm, mesoderm, and endoderm) are formed from the blastula.
The middle layer is formed during the gastrulation. This layer develops into muscles, bones and blood vessels.
Laura H Twersky has written: 'Calcium in amphibian gastrulation' -- subject(s): Physiological effect, Calcium, Embryology, Gastrulation, Amphibians
Gastrulation is first step towards germ layer development .
glands bih/...!
Gastrulation
gastrulation
yes