Cool......Thanks.....n/p

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Posted by joe c on December 20, 2001 at 12:55:39:

In Reply to: depends... posted by Chris Harper on December 20, 2001 at 11:35:58:

: It depends on what you mean by "genetic".

: If you mean is is a single loci recessive or dominant trait then no.

: If you mean is it a "heritable" trait under the control of multiple gene loci then the answer is probably. Measuring the heritability of traits is difficult in general and is especially difficult in reptiles that have a fairly long generation time.

: I seem to remember a breeder having a stunning white oak ratsnake that he bred to a normal grey ratsnake. The offspring looked intermediate between the two parents and it did not appear that neither the "normal" appearance nor the "white oak" appearance recessed to the other.

: This tends to support that notion that the phenotype of the white oak form is under the control of multiple gene loci and is a heritable trait and not exclusively due to some non-genetic factor(s). However, only a "proper" quantitative genetic study would allow us to reject that hypothesis.

: : Just wondering if anyone has put any 'white oak' gray rats through breeding trials to see if it is genetic? I understand they are locale specific (n.eastern Florida or s.eastern Georgia?) but was wondering if they are BOTH locale and genetic? (i.e: the anery corns in s.western Florida)Thanks for any info.
: : joe c

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: : It depends on what you mean by "genetic". : : If you mean is is a single loci recessive or dominant trait then no. : : If you mean is it a "heritable" trait under the control of multiple gene loci then the answer is probably. Measuring the heritability of traits is difficult in general and is especially difficult in reptiles that have a fairly long generation time. : : I seem to remember a breeder having a stunning white oak ratsnake that he bred to a normal grey ratsnake. The offspring looked intermediate between the two parents and it did not appear that neither the "normal" appearance nor the "white oak" appearance recessed to the other. : : This tends to support that notion that the phenotype of the white oak form is under the control of multiple gene loci and is a heritable trait and not exclusively due to some non-genetic factor(s). However, only a "proper" quantitative genetic study would allow us to reject that hypothesis. : : : Just wondering if anyone has put any 'white oak' gray rats through breeding trials to see if it is genetic? I understand they are locale specific (n.eastern Florida or s.eastern Georgia?) but was wondering if they are BOTH locale and genetic? (i.e: the anery corns in s.western Florida)Thanks for any info. : : : joe c

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