Transposable element accumulation drives size differences among polymorphic Y Chromosomes in Drosophila

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Figure 3.
Figure 3.

Repeat abundance and age suggest recent TE mobilization contributes to size differences among polymorphic Y's. (A) TE abundance in YM and YL relative to YS from paired-end mappings to the TE library. TEs for which the absolute difference is >200 kb are shown. For details, see Methods section “Repeat content estimation by reference library.” (B) TE abundance in YM and YL chromosome assemblies relative to the YS assembly. TEs for which the absolute difference is >200 kb are shown. For details, see Methods section “Repeat content estimation by de novo assemblies.” (C) Divergence in TE copies from whole-genome Illumina sequencing across the Y's as calculated by dnaPipeTE. (D) Divergence in TE copies from the YL assembly based on the top 50 most abundant TEs (relative to YS), other TEs, and rolling-circle transposons as calculated by RepeatMasker. Percentages of TEs sum to 100% for each category.

This Article

  1. Published in Advance May 2, 2022, doi: 10.1101/gr.275996.121 Genome Res. 32: 1074-1088

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