The main conclusion from observing animals of each class based on the similarities of the embryos is that there is an evolutionary relationship among these lineages.
What is evolution?
Evolution makes reference to the process of descendence with modification from a common ancestor.
Embryo structures are fundamental for studying evolution of a given taxonomic group because they exhibit similarities due to a common origin.
These homo-logies (i.e., similarities by the same origin) may disappear in adult organisms.
In conclusion, structural similarities of the embryos can be used to show evolutionary relationships among animals of different taxonomic classes.
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