Organomananswered grow question 10 months ago Every seed is an unique organic living being with its own individual genetics, that will grow how it is "programed" to. No two seeds ever have the the same "program", even though they are the same strain and from the same packet.
Breeders produce 100s of thousands of seeds to sell to you and me for a whole year, so the chances that the seeds we get came from the same "mother" plant are virtually zero, that is why there are differences.