Isn't cell division more or less a random process? So even if the genetic code is similar, it can result in different cell patterns. I.e the process from DNA to

Isn't cell division more or less a random process? So even if the genetic code is similar, it can result in different cell patterns. I.e the process from DNA to cells isn't fully deterministic. For example, if you plant identical trees, will they grow their branches identically, even in a very strictly controlled environment? I guess not.