Developmental embryology is the study of prenatal life or the formation and development of embryos. It is a major subset of the field of developmental biology.
The field of developmental embryology involves the study of cellular mitosis, the process by which cells divide, and meiosis, the process by which a cell divides its genetic material to form gametes, or sex cells, which join during fertilization. It examines the embryo from its earliest stage as a single-cell organism, or zygote, to the successive division and multiplication of cells and differentiation of certain cells to form organs with specialized functions. Developmental embryology generally continues the study of embryos through the fetal stage until birth.