Your right J is sexual reproduction, and K is asexual reproduction. But sexual reproduction requires the presences of a male and a female. But other asexual reproduction doesn't, and just requires sexual maturity. They produce offspring in the form of spores for example.
Cell controls on division contact with other cells once DNA (cell directions) is copied, cell divides sequence of steps
I do not believe so because it is genetic, just you can't forever change a feature without plastic surgery or an accident, etc.