State that in early development, the zygote forms an embryo which is a ball of cells that implants into the lining of the uterus

In early development, the zygote forms an embryo, which is a ball of cells that implants into the lining of the uterus. After fertilization, the zygote undergoes a series of rapid cell divisions known as cleavage, resulting in a cluster of cells. This cluster eventually develops into a blastocyst, which is the stage that implants into the uterine lining. The implantation process is crucial for establishing a connection between the developing embryo and the maternal blood supply, allowing for further growth and development.