Quadruplex screening in M. musculus and D. rerio mapped sequences.

(a) Values show the number of subsequences containing at least one G2 or G3 quadruplex with loop lengths of 1 to 15 nucleotides. Percentages reflect the number of subsequences containing G3, G2 or not containing quadruplexes (ND) relative to the total number of sequences studied.(b) PQS density calculated considering the number of G2 quadruplexes with loop lengths of 1 to 15 nucleotides per kbp studied.PQS, Putative Quadruplex Sequences.