Yes. DNA probably "evolved" from RNA. Keep im mind that the time scale is huge and that at the time, the earth was really hot and pressurized, so we can only ha

Yes. DNA probably "evolved" from RNA. Keep im mind that the time scale is huge and that at the time, the earth was really hot and pressurized, so we can only have speculations. A posituve thing is that in Miller experiment, he found out that those conditions create aminate acids. That also indicate that panspermia theory is unlikely (not impossible, but not Occam's razor choice at least).