a factor responsible for plant growth, a change which affects the offspring of F2 generation only, a change that is inherited, a change which affects the parents" /> a factor responsible for plant growth, a change which affects the offspring of F2 generation only, a change that is inherited, a change which affects the parents" /> a factor responsible for plant growth, a change which affects the offspring of F2 generation only, a change that is inherited, a change which affects the parents" />