Indicate whether each of the following statements is describing (a) cleavage or (b) gastrulation. ____ (1) period during which a morula forms ____ (2) period when vast amounts of cell migration occur...

Indicate whether each of the following statements is describing

(a) cleavage or

(b) gastrulation.

____ (1) period during which a morula forms

____ (2) period when vast amounts of cell migration occur

____ (3) period when the three embryonic germ layers appear

____ (4) period during which the blastocyst is formed