I'm not that knowledgeable on this, but from what I know, I don't think it matters how many times you take a clone, the genetics will remain the same.
As long as you keep the plant healthy, it will keep on going. This is why some breeds can be "clone only" because they just keep taking clones of the same lineage of plants without mixing the genetics at all.
But, like I said, this is just my view from the little knowledge I've picked up.
nope that aint right dude, you can clone infinite..
I know aguy whos ran a plant for 18yrs,
and Al.B has been running his Sweet Tooth clone generations for over seven yrs
no it is very true you can get herms and other problems such as slow rooting,as well as loss of f1 vigur if present , unstable plant structure IE leafs and branch issues, lower thc content, and a normal female can start to autoflower.