Definition: A zygote is the cell formed when two gametes (e.g., sperm and egg) fuse during fertilization. It represents the earliest stage of development in many multicellular organisms, including humans, where it then begins to divide and grow into an embryo.
Etymology & Origin: The term ‘zygote’ comes from the Greek word ‘zygotos,’ meaning ‘yoked’ or ‘joined together.’ It reflects the process of two separate cells combining to form a single, new entity. The term was introduced into scientific language in the late 19th century.
Examples:
- After fertilization, the zygote undergoes several rounds of cell division to form an embryo.
- The study of zygote formation is crucial for improving techniques in assisted reproduction such as IVF (in vitro fertilization)
