Tomato Growing list 2021

I don't know whether, if a potato leaf crosses with a regular leaf tom, seeds from both toms will not be true - I can't find an answer on t'internet.

I haven't got a clue really. 

Though my thinking is that regular Tom's rarely cross - has both make and female "bits" contained within the flower. Self pollination occurs before stray pollen can get to it??
On the potato leaf the flower protrudes more than regular leaf Tom's so will cross more readily. Easier fir insects etc to get to?

Though iIf you grew in a group and choose to save from a tomato out of the middle to the back of the glass etc there would be less likelyhood of a cross. ?

I ran a seed swap once  someone saved Ruby - that had crossed so it can happen. The fruit seemed to be the same ( from memory) just the potato leaf had disappeared.