Where did the first DNA come from? Short fast 1 minute answer

DNA as a coding sequence of life in the cells is one of the main biotechnology definitions that make a big challenge about the history of revolution and evolution in human life but the big question that is always asked is: where did the first DNA come from?

We are reasonably sure now that DNA and DNA replication mechanisms appeared late in early life history, and that DNA originated from RNA in an RNA/protein world.

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