Southern Blots

Michael L. Sullivan mlsulliv at
Mon Aug 26 13:09:20 EST 2002

Some things to keep in mind are

larger fragments will transfer less efficiently than smaller fragments

longer stretches of homology with the probe can produce more intense signals

multiple copies of the gene-- some fragments may be common among 
different copies of the gene, giving higher signals, while others 
might be unique.

There are probably others as well.


>I am trying to figure out the results of my southern blots. I ran 
>blots and was able to match
>                  up the fragments with theoretical sizes predicted 
>by sequence data. However, some of the
>                  bands were twice (or more) intense than others and 
>I am trying to understand what this
>                  means.


Michael L. Sullivan, 
U.S. Dairy Forage Research Center
1925 Linden Drive West
Madison WI, 53706

(608) 264-5144 Phone
(608) 264-5147 Fax

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