James Mohler jmohler at barnard.columbia.edu
Tue Oct 7 14:32:44 EST 1997

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Date: Thu, 2 Oct 1997 10:12:15 -0400 (EDT)
From: James Mohler <jmohler at barnard.columbia.edu>
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To: Earl Nishiguchi <earln at hawaii.edu>
Subject: Re: Basc
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Basc is a balancer for the first chromosome.  Balancers don't allow
crossing-over and are useful to maintain chromosomes with lethal mutations
as heterozygotes.  You can find more info on balancers at:


Also the master web page at flybase (http://flybase.bio.indiana.edu:82/)
is a good place to start to look for information about various fly
genes and aberrations.

Canton-S is a wildtype strain derived from flies collected in the wild in
the twenties.  This strain and Oregon-R (collected in Roseberg Oregon in
1925) are usually considered the two standard wild-type strains by

On 2 Oct 1997, Earl Nishiguchi wrote:

> My son (10th grader) is doing a project on drosophila and came across an
> article mentioning using "Basc" and a wild strain such as Canton-S.  We
> looked at various catalogs like Carolina Biological Supply and couldn't
> find any "Basc" flies.  Can anyone help?
> Thanks
> Earl


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