A zygote is the eukaryotic cell that is formed during fertilization (when sperm joins the egg). In other words, it's the fertilized egg!
A zygote is the first cell of a new organism.
Like all normal body cells, zygotes are diploid cells.
Humans are multicellular organisms with specialized cells that are grouped together to form different organs that carry out various functions. However, we now know that before we develop this giant machine of cells, we were just a single cell called the “zygote”. Just imagine that a single-celled zygote divides countless times to form more and more cells to turn us into giant humans! A zygote has the unique ability to make any kind of cells; your heart, nerves, muscles… you name it and it comes from this tiny zygote. This potential of the zygote to develop into any kind of cell found in the human body is called totipotency, and is why a zygote can create an entire organism from a single cell. click to learn more