What organelle in a plant cell produces a new cell membrane in the process mitosis?

Golgi vesicles

In plant cells, Golgi vesicles coalesce at the former metaphase plate, forming a phragmoplast. A cell plate formed by the fusion of the vesicles of the phragmoplast grows from the center toward the cell walls, and the membranes of the vesicles fuse to form a plasma membrane that divides the cell in two.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.