General flow: DNA > RNA > Protein
special transfers (RNA > RNA, RNA > DNA, Protein > Protein)
(Transcription factors, RNA Polymerase,promoter) Prokaryotic / Archaeal / Eukaryotic
(Ribosome,tRNA) Prokaryotic / Archaeal / Eukaryotic
epigenetic regulation (Genomic imprinting)
transcriptional regulation
post-transcriptional regulation (sequestration, alternative splicing, miRNA)
translational regulation