Embriones

Embriones refers to the earliest stage of development in multicellular organisms. It begins after fertilization, when a sperm fuses with an egg to form a zygote. This single-celled zygote then undergoes rapid cell division and differentiation, transforming into a complex, multicellular structure. The specific stages and characteristics of embryonic development vary significantly across different species, from plants and fungi to animals. In many animals, this period is marked by the formation of germ layers, which will eventually give rise to all the tissues and organs of the organism. The embryonic stage is crucial as it lays the foundation for the organism's future growth and development. In humans and other mammals, the term embryo is typically used for the first eight weeks of gestation, after which the developing organism is referred to as a fetus. The study of embryos is a fundamental part of developmental biology, providing insights into genetics, evolution, and the processes that govern life.