TOMATO SEEDS FUNNY OR WHAT/plus a tom question

[lottie dolly]

Just split a tomato for seeds and they are starting to chit inside the unopened tom,have heard of squash doing it,but toms no,the variety is striped stuffer,i had it on the cill ripening first,so no saving from this one,but i am going to sow some and keep watch,maybe the arm pit method to follow,will try another and see what it's upto within.
Question please,i have saved big daddy seeds,some have them down as F1 and some do not mmmm,looks like i might have to experiment like i did with the F1 vi@gr@,them are 3 years on and not quite the same same,but really tasty also kept the size.
what do you all think please

1 pic the seeds,the other big daddy before it fell between bread

[Penellype]

I've had tomato seeds do this, particularly on a hot windowsill - they seem to do it regardless of whether the tomato is still attached to the plant or has been picked to ripen. It seems to be related to heat.