I think the dna of the strain , is maintained with the cutting. But as the clone is cloned, the enviorment will change the make up of the clone to match.
Thus a clone changes to the current conditions. A desert strain grown in a high rh and cooler temps , does not need the extra resin to make the plant servive in wetter and cooler temp.
I have grown Hawiian strain for 10 years before it went down hill , From wowie wowie to woops.
Growing and cloning a high temp and low rh , required a little work even the its HIgh High went to flat land.
Trouble with seeds there so many piss poor , validated strains.
Breeding for stablizied seed, not just knocking up plants. I would guess it takes about 3-10 years to get a stablized strain and 20-100 test to prove it.
But this has been proven over the last 60 years so not much has changed.