Two necessary molecular ingredients of DNA and RNA have been confirmed to have originated from outer space (...) uracil and xanthine are present in fragments of the Murchison meteorite and are not terrestrial in origin.
Leer Noticia
Two necessary molecular ingredients of DNA and RNA have been confirmed to have originated from outer space (...) uracil and xanthine are present in fragments of the Murchison meteorite and are not terrestrial in origin.