embrionului
Embrionul is the term used to describe the early stage of development of a multicellular organism. In humans and other mammals, it begins after fertilization, when the sperm fuses with the egg to form a zygote. This single cell then undergoes rapid cell division and differentiation, gradually forming the various tissues and organs of the developing organism. The embryonic period is characterized by significant growth and structural changes.
The development of an embryo is a complex and highly regulated process. Following fertilization, the zygote
The embryonic stage is critical for the establishment of the basic body plan. By the end of