Posted by Greg on October 06, 1999 at 22:35:53:
In Reply to: Genetics Frustration - Phase One posted by Jevan on October 01, 1999 at 23:28:32:
: I'm at a loss to fully explain my recent breedings of German Tuxedos. I have however, developed a preliminary theory based on my current observations.
: Let's take two fish, a white tailed tuxedo and a female tuxedo.
: The male is phenotypically "White" and we'll assume that his genes are "White & Yellow". Let's breed that to a female whose genes we'll assume are "Yellow & White".
: Note: If the female were to display color she would be yellow as that gene is presented first.
: The offspring then will be of these genetic types:
: 1) White/Yellow
: 2) White/White
: 3) Yellow/Yellow
: 4) Yellow/White
: Now, here's the theoretical part: If the genes are mixed as in examples 1 and 4, the color of the female parent takes precedence. In this case fishes 1 and 4 would be yellow (as their mother was yellow). Fish 3 would be yellow. Fish 2 would be white.
: The genes of the fish then become respectively:
: 1) Yellow & White
: 2) White & White
: 3) Yellow & Yellow
: 4) Yellow & White
: The phenotypical color of the fish would be the gene which is listed first.
: This is my current theory that I'll be testing.
I think I understand what your theory is, but there is one thing I am not clear on. Are you saying that there is one gene controlling color and either White or Yellow will be dominant, depending on what the mother is? If this turns out to be so, AZ has departed from the real world genetics model.