Embryo
Embryo is specifically refers to the sexual reproduction, refers to the synthesis of sperm and egg zygote, after several cell division and cell differentiation after the formation of the ability to develop into the body of the body. It refers to the earliest stage of developmental biology. Sexual reproduction of the body, once the sperm to the egg conception, the egg becomes fertilized eggs, and also have sperm and egg DNA. Plants, animals, some of the original organisms, fertilized eggs will spontaneous cell division, and the formation of a multi-cell organism. The embryo refers to the initial stage of the development process, starting from the first division of the fertilized egg, to the beginning of the next stage of development. ...