Quote:
Originally Posted by QuickSilver  And to reply to my own post...
It's my understanding about a dozen genes have been identified that control eye color in humans. It's very rare for a physical trait to have just ONE controlling gene, though it is possible. It seems to me that coloring in dogs is too varied to be controlled by just one gene. |
I thought the genes concerning the eye included such things as depth of color or amount of color, besides the actual color. In other words, two people could have the BB gene for blue eyes, but on one it, would be a much darker blue and another could have a pale pale blue. Lighter colors again, are always recessive. Are you sure the other genes aren't referring to other traits of the eyes such as shape etc? I haven't read any recent research, but would love any links you could send me.
The reason I thought there was only one gene responsible for the parti color are the statistics given when two parti carriers mate. They say that there is a one in 4 chance, so this would mean one gene is involved, and each parent has to give one recessive trait to the offspring for the results to be seen. If more then one gene were involved the changes of having a parti, would be greatly reduced. In the case where both parents are Parti's and actually displaying the trait, there is 100 percent chance of the trait being displayed in the offspring, this again indicates only one gene is responsible for the results.