Which event occurs first during embryonic development?
A) gastrulation
B) neurulation
C) cleavage
D) organ formation

Question

Quizplus · Accepted Answer

Cleavage is the first event that occurs during embryonic development, where the zygote rapidly divides mitotically into multiple cells, forming a ball of cells called a blastula.

Note: Although gastrulation and neurulation are important events in embryonic development, they occur after cleavage. Organ formation is a later stage of development that occurs after gastrulation and neurulation.

Which Event Occurs First During Embryonic Development