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-   -   Contig and scaffold N50 (http://seqanswers.com/forums/showthread.php?t=91663)

jm1789 11-12-2019 12:33 PM

Contig and scaffold N50
 
Hi all,

Is it possible for contig and scaffold N50s to be very similar (e.g. within 2-3k bp) or the exact same? I have seen a few examples of this in some de-novo assemblies that I am working with and just want to make sure this is OK.

Thanks for any thoughts!
:)

SNPsaurus 11-12-2019 04:51 PM

PacBio assemblies will have contig and scaffold stats that are very close. I guess single-end Illumina or paired-end Illumina on short fragments would also be like that?

jm1789 11-13-2019 05:19 AM

I am using paired end Illumina reads. Usually I see that the contig N50 is 1/2 or 2/3 of scaffold N50, so I was a bit concerned when we got some with exactly the same contig/scaffold N50


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