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Order of BLAST matches

Kevin Karplus karplus at cheep.cse.ucsc.edu
Mon Nov 1 14:29:23 EST 2004

In article <d2f49f4e.0410192324.122559a8 at posting.google.com>, 
	Jonas Andersson wrote:
> Sometimes when I do a nucleotide BLAST on Genbank, I find that the top
> four-five hits have identical E-values and score. How are these hits
> ordered in such cases? Is there any reason why I should prefer the
> top-most one?

The order is arbitrary (probably the order in the underlying
database), and you should not favor the first one.

Kevin Karplus 	karplus at soe.ucsc.edu	http://www.soe.ucsc.edu/~karplus
Professor of Biomolecular Engineering, University of California, Santa Cruz
Undergraduate and Graduate Director, Bioinformatics
Senior member, IEEE	Board of Directors, ISCB (starting Jan 2005)
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Effective Cycling Instructor #218-ck (lapsed)
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