Rat genetics.

[BuckeyeBalls]

"IF" one knows what they are doing high white genes are NOT an issue.
I have bred hundreds of litters with high white gene females and have never thrown mega colon babies, but I know not to breed high white to high white.

It's not an accident, breed a high white gene to a high white gene and it's risk of mega colon.

So if i breed a rat with a high white... To like my all black male... All would be good? Cuz none of my males are white, at all