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2.Human Reproduction
normal
During gastrulation the dorsal lip of blastopore (1 external sign of gastrulation) appears
A
Anteriorly in the pigmented area of egg
B
Posteriorly in the yolky cytoplasmic area
C
In the centre of the egg
D
Behind the grey crescent area
Solution
(d)During gastrulation the dorsal lip of blastopore appears behind the grey crescent area.
Standard 12
Biology