Re: Re: Debbie Rairdon
- To: i*@egroups.com
- Subject: Re: [iris-talk] Re: Debbie Rairdon
- From: a*@cs.com
- Date: Sun, 31 Dec 2000 16:30:05 EST
In a message dated 12/31/00 11:40:07 AM Mountain Standard Time,
irischapman@netscape.net writes:
<<
A good thought. When I look at photos of DR it would apear to be a
pale yellow, and could also have the Recessive reduced Carotine genes,
thus the yellow could be flavenoid based? Walter thought that it was a
bee pod, in which case selective recall or a bee visiting more then
one flower could account for it.
>>
The table in TWOI shows that Debbie Rairdon has several xanthophylls (yellow
pigments) derived from the beta-carotene pathway, although it was not tested
for specific carotenes.
Lycopene is associated with the alpha-carotene pathway. Thus, the presence
of a dominant beta-carotene inhibitor in both parents, or the hypothesized
"switch" governing the carotene pathways, could explain the surprising
appearance of DR.
I did not mean to suggest that this is KNOWN to be the case. It's just a
possibility based on known genetic factors. A visiting bee would change the
picture entirely!
Sharon McAllister
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