On 1/19/11 4:19 PM, Luvina Guruvadoo wrote:
> Hello D.,
>
> Thanks for your inquiry. The letters (A, C, T, G) refer to bases that 
> do not match the reference assembly. "N" means "nucleotide" (unknown), 
> so it is always a mismatch. By default, mismatching bases are 
> highlighted red in the display.

Hi Luvina,

Thanks for your response. I am still confused. If A, C, T, G are bases 
that do not match the reference, then are they mismatches? If they are 
mismatches, then why they are in white (please see 
http://img4.imageshack.us/img4/4976/screenshot20110119at301.png) instead 
of red? Also, if all those letters (A, C, T, G, N) are mismatches, it 
even confuses me more since the track shown in the screenshot was 
aligned with Bowtie and two mismatches max per read (where as there are 
some reads with 5 mismatches).

Please advise,

Thanks,

D.

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