This page explains the embryonic development of a zygote, highlighting the role of mRNA and protein gradients in determining cell fates, alongside intrinsic signals and cell interactions. It details t...This page explains the embryonic development of a zygote, highlighting the role of mRNA and protein gradients in determining cell fates, alongside intrinsic signals and cell interactions. It details the Spemann organizer's role in gastrulation and parallels with Drosophila development, emphasizing the formation of various organs such as wings, legs, and eyes. Overall, the development process encompasses axis establishment, body part formation, and detail refinement.