Subject: T(1;4)sc H and Dp(1;Y;4)
Dear Colleagues,
The aberration T(1;4) sc H stated as viable in its report is actually homozygous lethal and fails to complement at least 2 genes of the fourth chromosome namely:
spa-sv, pho.
Presumably this is a translocation deficient for terminal genes on the fourth.
About Dp(1;Y;4)spa pol I'd like to say that the y+ in this duplication variegates. Variegation can varies from a single yellow bristle to large portions of the body.
Regards
Rui
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Subject: Re: T(1;4)sc H and Dp(1;Y;4)
Dear Rui,
Thank you for your mail. I would like to incorporate your data into
the relevant sections of the aberration records in FlyBase but need to
clarify a couple of points first.
T(1;4)scH (FBab0006547):
When you say that this deletes sv and pho do you mean that the
T(1;4)scH as a whole is deleted for sv and pho, or that one of the
segregants, namely (Ts(1Rt;4Rt)scH: FBab0023009) deletes sv and pho?
I think you are meaning the former, but I must check.
Dp(1;4)193 (FBab0003153):
I think this is the aberration you mean when you wrote 'Dp(1;Y;4)spa
pol'. Please could you confirm this for me.
Your mail will be archived as a personal communication to FlyBase, to
serve as the source for the information that you have kindly sent.
Many thanks for your help,
Rachel.
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Subject: Re: T(1;4)sc H and Dp(1;Y;4)
Dear Rachael,
With Dp(1;Y;4)spapol y+ I meant (FBab0003251).
This aberration is homozygous viable (excellent viability and fertility) and
y+ variegates.
T(1;4)sc H I meant (FBab0006547) bloomington stock BL-4055.
This stock is homozygous lethal and does not complement sv-spa and pho. It
seems that there are some other distal genes not complemented by this
translocation ( I'll send these data to you later if you want).
T(1;4)sc H complements:
ciD ( lethality), pangolin, and eyR.
Another aberration:
Tp(4;3)f (FBab0010095) BL895. It complements spa-sv but it does not
complement the lethal combination ci D/pan3
Regards
Rui Sousa-Neves