With respect to the origin of life, a leading researcher in this field, Leslie Orgel, has said after noting that neither proteins nor nucleic acids could have arisen without the other, concludes
And so, at first glance, one might have to conclude that life could never, in fact, have originated by chemical means.5
Being committed to total evolution as he is, Dr. Orgel cannot accept any such conclusion as that. Therefore, he speculates that RNA may have come first, but then he still has to admit that:
The precise events giving rise to the RNA world remain unclear. . . . investigators have proposed many hypotheses, but evidence in favor of each of them is fragmentary at best.6