Examples that help prove the evolution theory using embyology

1.) It can easily be seen in the image that at the very early stages of development vertebrate embryos are almost identical in anatomy.
2.) Organism's genes dictate their development in the early embryonic stages of life. The more closely two organisms' genes are, they are common to share a common ancestor. According to ucsd.tv/evolutionmatters, Similar genes suggest how closely their embryonic development is.
3.) Humans have a tailbone that is not visible during embryonic development, which suggests that humans evolved to not depend on their tailbone serving a useful purpose.
4.) Humans do not have gills as fish do, but human embryos have gill slits, suggesting humans and fish share a common evolutionary ancestor.
5.) All the multicellular sexually reproducing organisms start their life from fertilized eggs, which are single cells.
6. Not every feature of an ancestor’s embryo appears in its descendants, nor do all stages of development unfold in a strict evolutionary order.
7. It's not until after 3 weeks, that layers form and will eventually differentiate and form specific adult organisms.