Posted by:
Mahlon
at Tue May 23 15:06:27 2006 [ Email Message ] [ Show All Posts by Mahlon ]
In response to this....
"For the snake breeder, it is the genes that affect growth rate, color, pattern, shape, hardiness, behavior and fertility that are important (If I forgot an important component of the phenotype, feel free to add)." - Bigfoot
Well, I would say that as a "working" definition, that works pretty well but is in general a bad genetic definition of what a phenotype is. Think about it this way, the genotype describes individual, or small groups of genetic traits, and the means of inheritance. Phenotype on the other hand, is a description of ALL the genotypes working together. The phenotype is in essence the end result, good example would be Graziani's het pieds(spider het. pied, pastel het. pied, link here: http://forums.kingsnake.com/view.php?id=1016293,1016293 ). Now normally only one copy of the pied gene will result in no phenotypic change, but paired with the pastel or spider it IS changing the phenotype, creating an intermediate between the two.
Hope this helps,
Dan
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Phenotype... - Mahlon, Tue May 23 15:06:27 2006