Extended Data Fig. 2: Distribution of repetitive elements in the cockle genome.
From: Somatic evolution of marine transmissible leukemias in the common cockle, Cerastoderma edule
Frequency of classifiable repeats (26% of all repeats) along the reference cockle genome, displayed in terms of number of copies per 100-kb genomic segment. Repetitive element types with more than 1000 annotated copies are represented: long interspersed nuclear elements (LINE, 172,722 copies, 33.0%), transfer RNA repeats (tRNA, 81,766 copies, 15.6%), long terminal repeat elements (LTR, 78,009 copies, 14.9%), simple repeats (70,016 copies, 13.3%), short interspersed nuclear elements (SINE, 55,434 copies, 10.6%), DNA repeat elements (42,917 copies, 8.2%), low complexity repeats (12,171 copies, 2.3%), rolling circle repeats (RC, 8,843 copies, 1.7%), satellite repeats (2,100 copies, 0.4%). Genomic segments along the ideogram are classified as GC-low or GC-high based on whether their average nucleotide content is below or above the estimated average genomic G+C content (35.6%).
