Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA

摘要

Genetic map of mitochondrial genomes. The white arrows represent protein coding genes with predicted transmembrane domains of encoded proteins marked in orange. The long dark arrows represent rRNA genes; the short dark arrows represent tRNA labeled by a one letter amino acid code, short white arrows represent duplicated tRNA-like structures, a pink box indicates the location of an AT-rich region; a grey box indicates the location of repetitive sequences; blue lines in front of the genes show the location of the polyadenylation signal. Inner circles represent local compositional bias, calculated in a 200 bp long sliding window with 25 bp steps, unless indicated otherwise. A green outer circle represents a AT-skew (A−T/A+T); a red line represents a filtered AT‐skew, calculated at non-coding regions and the second codon position only. A black line represents a filtered AT-skew, calculated at neutral and non-coding positions only, in a larger, 1000 bp long window. A middle blue circle represents a GC skew (G−C/G+C), and a green line represents a GC skew at neutral sites, calculated in a window of 1,000 bp. Both skew indices are presented in absolute scale, starting at zero. An inner red circle represents local GC content, and a green line shows GC content at neutral sites. Local GC content is presented in scale relative to the average for the whole mitogenome.