If gastrulation was blocked by an environmental toxin, then A) ...

[sammy]

If gastrulation was blocked by an environmental toxin, then
A) cleavage would not occur in the zygote.
B) embryonic germ layers would not form.
C) fertilization would be blocked.
D) the blastula would not be formed.
E) the blastopore would form above the gray crescent in the animal pole.

[clippers!]

For sure it has to be B Mark as solved once you're done!