Interpreting results of a dotplot

Question

[pablo]

Hello,

I have an assembly with a size 1.9Gb . I expected a genome with a size around 1.1Gb.

I supposed the excess is caused by heterozygosity (probably duplications) . To get an idea of that, I used dgenies to plot my assembly against itself.

I got this dotplot. I got a good line, what's "normal" because I compare the two same sequences. But, there are some frameshifts on that line from 1732Mb until the end (second image), I can't explain why... Does that show some heterozygosity ?

Moreover, do you know what are the grey bars on x & y axis?

Thanks for all

[Ram]

The tool website asks users to send an email. Please do that, as this seems to be the only dgenies related post on the forum and you'd get help faster over email.