All cells in an embryo have the same dna. however, the embryonic cells form organs, such as the brain, and the kidneys, which have very different structures and functions. these differences are the result of

All cells in an embryo have similarities in DNA, but the embryonic cells create organs namely the brain as well as the kidneys which have very different structures and functions. These differences are due to the result of certain genes being expressed in some cells and not in others.