I do know that when crossed together, Tremper X Rainwater, the offspring
resulting are normals. Personally, I'd like to see tyrosine positive and
negative testing done. FYI (not directed to anyone in particular, just a
general statement), albinism is the lack of melanin, or black and brown
pigments. Thus why in our lovely critters we see an emphasis in oranges,
yellows, reds, and other non-melanin pigments. In other words, where we see
black or brown in normals, albinos hatch pink or white. I take take this
into a little more depth about tyrosinase (enzyme) and tyrosine (amino
acid), but I don't I don't want to bore anyone :)
Later,
Chris
----- Original Message -----
From: Beverly Erlebacher <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, April 03, 2001 2:02 PM
Subject: Re: [Gecko] meaning of "hypo"
> > Date: Tue, 3 Apr 2001 14:20:40 -0400
> > From: Julie Bergman <[EMAIL PROTECTED]>
> >
> > Someone care to respond?
>
> As other people have said, 'hypo' means less, fewer, under, while
> 'hyper' means more, higher or above.
>
> I think your original question was whether 'tangerine' leos should
> really be called 'hypo'. My understanding is that the leos called
> hypomelanistic have fewer black spots and/or spotting over a smaller
> area than the wild type. The extreme seems to be leos with spots only
> on the head and tail. 'Tangerine' is supposed to be the condition
> where the orange color sometimes found in patches on the tail appears
> elsewhere on the body. Judging from the photos I see on the web, it's
> possible that some of the animals being called tangerine are actually
> very intense 'high yellows', or 'hyperxanthics', geckos with an
> especially bright yellow base color, compared to the pale yellow or
> beige base color of the wild type, but colors don't always appear
> accurately in on-line images.
>
> As for tangerines 'really' being hypomelanistics, it looks like most of
> the tangerines breeders are producing are *also* hypomelanistics. This
> is a reasonable thing for breeders to do, since the tangerine color
> shows up best on an animal with less black. AFAIK, both the
> 'tangerine' and the 'hypomelanistic' appearance depend on many genes,
> and the two traits are inherited independently. I don't know whether
> there is a connection between 'tangerine' and 'high yellow', although
> all the pictures I've seen of tangerine geckos have also been high
> yellows. It would be interesting to know whether 'snow' and tangerine
> could be combined. 'Snow' is hypoxanthism, animals with less yellow
> than normal, approaching white base color in the extreme.
>
> AFAIK, the only monogenic or simple Mendelian traits in leos are
> albino, patternless and blizzard. I don't know if Tremper albinos
> and Rainwater albinos are two separate traits, or different alleles
> of the same gene.
>
> If any of the above is out to lunch, anyone more knowledgable please
> correct me. Most of my knowledge of leo genetics is second to nth
> hand. I published some papers on fungal genetics long ago but since
> then the organism I worked with has been thrown out of the fungal
> kingdom!
>
>
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