Since this seems to be a scientific answer about genes. Can someone explain how the genes came about?
It is said and I do not deny it that all living organisms on Earth have genes made of the same four bases: adenine (A), thymine (T), cytosine (C), and guanine (G). These bases are used to form double-stranded DNA molecules that store genetic information. The genetic code is written in the DNA and RNA molecules, and it encodes instructions for how to reproduce and operate the organism.
So these things themselves seem very, very complex. Do scientists know exactly how the DNA structure came about?