On the Replication of Mirror DNA & Chiral Selection

Abstract

Chiral selection is one of the deep mysteries of biology. Amino-acids are left-handed and DNA and RNA double strands form a right-handed screw. One can assign handedness with individual DNA nucleotides and DNA double strand. The challenge is to understand the origin of chiral selection. The recently reported replication and transcription of mirror DNA using mirro variant of DNA polymerase provides some hints in this respect. In TGD framework, chiral selection would be induced from that in dark matter sector identified in terms of phases of ordinary matter with non-standard value of Planck constant h_eff/h = n. In living systems, dark matter would reside at magnetic flux tubes and control ordinary matter. TGD predicts standard model couplings, in particular weak, parity breaking. For h_eff/h = n the scale below which weak bosons behave as massless particles implying large parity breaking is scaled up by n. Large parity breaking for dark matter becomes possible in even biological length scales for large enough h_eff. The crucial finding is that the states of dark proton regarded as part of dark nuclear string can be mapped naturally to DNA, RNA, tRNA, and amino-acid molecules and vertebrate genetic code can be reproduced naturally. This suggests that genetic code is realized at the level of dark nuclear physics and induces its chemical variant. More generally, biochemistry would be kind of shadow of dark matter physics. A model for dark proton sequences and their helical pairing is proposed and estimates for the parity conserving and breaking parts of Z⁰ interaction potential are deduced.