Inbreeding?

[Mr. Misha]

Depends if there are genes present that cause the negative traits. Inbreeding can strengthen a genetic line also, assuming the negative traits are weeded out or not present in the first place.

What would be some of those negative traits be? Something like blindness I take it? The reason I ask is because I'm not aware of too many negative traits in ball pythons. Definitely want to learn more.