Hello candidate,

Due to Limited answering options, it's not possible for me to draw a flowchart but here are some key steps involved in the germinal layers of zygote.

The three germinal layers are the endoderm, the ectoderm, and the mesoderm teacher involved during the zygote formation. In further process, the germ layers develop early in embryonic life, through the process of gastrulation.

Hope this answer was helpful for you!!