Re: Problem with green-tailed guppies

Posted by Don on June 17, 2000 at 15:56:22:

In Reply to: Problem with green-tailed guppies posted by Karin on June 16, 2000 at 12:47:20:

Hi Karin, I don’t know that I can help but I will comment on what I think is going on with the specific line you are working with. If you are at generation F30 and still seeing three phenotypes then you have stabilized a strain that is heterozygous for three phenotypes. You can sit up, roll over and beg and AZ will not let you have the trait you are seeking as a homozygous trait from this “specific” strain. This does not mean that you will never be able to find and stabilize a strain of leopard green. However, you will not succeed using the specific strain with which you are now working. I have briefly explained “heterozygous” at the url listed below.

Don

• Knowing when a trait is heterozygous and when to stop trying

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• Re: Problem with green-tailed guppies Karin 06/18/00 (1)
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Comments:
: Hi Karin, I don’t know that I can help but I will comment on what I think is going on with the specific line you are working with.  If you are at generation F30 and still seeing three phenotypes then you have stabilized a strain that is heterozygous for three phenotypes.  You can sit up, roll over and beg and AZ will not let you have the trait you are seeking as a homozygous trait from this “specific” strain.  This does not mean that you will never be able to find and stabilize a strain of leopard green.  However, you will not succeed using the specific strain with which you are now working.  I have briefly explained “heterozygous” at the url listed below.   

: Don


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