See first: microRNA-mediated replication timing (1) 6/17/21 microRNA-mediated replication timing (2) 6/27/21 microRNA-mediated replication timing (3) 6/29/21 Non-B DNA: a major contributor to small- and large-scale variation in nucleotide substitution frequencies across the genome 1/15/21 was reported on 6/29/21 as Study provides first genome-wide evidence for functional importance of unusual DNA structures Some regions of the human genome where the DNA can fold into unusual three-dimensional structures called c (G4s) show signs that they are preserved by natural selection. The…