33% het, who else keeps track?

[erie-herps]

In this case there isn’t really a right or wrong depending on how you look at it. I think breeders should keep track since there is still a chance of it popping up (a lot of us have heard stories of reptiles, typically corn snakes, producing animals that have a recessive gene that was an unknown het in both of the parents). Mathematically/statistically you’re right that she has a 33% chance of being het. It seems that in the reptile hobby this isn’t quite true, I’m personally not sure why. It shouldn’t be labeled as pos het as an advantage if selling but the buyer should know that it has a chance of being het. There’s a good discussion on it here:

Possible Het Input to Morph Calculator [#1189]

No, they would not. There is no such thing as a 33% poss het or a 25% poss het. The original 66% poss or 50% poss is either a het or it is not but you have to prove it out. The percentage is the statistical odds of the gene having been passed on from the breeding that produced it but those statistical odds begin and end for that one breeding only. The ultimate het status is still absolutely binary. As such, all subsequent breedings would fall under that same binary - If the odds were against y…