Genetics provides evidence for common ancestry from "summary" of The Language of God by Francis Collins
The study of genetics has brought a wealth of evidence supporting the idea of common ancestry among living organisms. By examining the DNA sequences of different species, scientists have been able to uncover remarkable similarities that point to a shared evolutionary history. These similarities can be seen not only in the genes themselves, but also in the way they are organized and regulated within the genome. One of the most compelling pieces of evidence for common ancestry comes from the presence of pseudogenes – genes that have lost their function due to mutations but are still present in the genome. These pseudogenes can be found in the same location in the genomes of different species, indicating that they arose from a common ancestral gene that was functional. This shared inheritance of non-functional genes is a clear sign of a shared evolutionary ...
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