Two fruit types on one vine??

[Tom C zone 4/5]

In the past when ever I have gotten a mixed up batch of seed there have been two (or more distinct) kinds of plants. The mature plant(s) were different in size, fruit type, leaf type even.

This year I grew out Verja's Paradajz an' I really think I did get two different fruit shapes on most of the plants. I didn't think plants could do that.

Now Carolyn-Craig before you fall down laughing, I'm getting told this in earnest.

I'm at a loss.
Tom C[/u]