A new plant is grown from a small piece of meristem tissue. The cells in the tissue divide by mitosis as the plant grows.
Which statement describes how mitosis affects genetic variation in the new plant?
Variation is produced, because each daughter cell receives half of the parent cell's chromosomes.
No variation is produced, because each daughter cell receives an identical copy of the DNA.
Variation is produced, because different genes are switched on as the cells differentiate.
No variation is produced, because the DNA is not copied before the cells divide.
194 exam-style questions on OCR GCSE Biology 2.1 Supplying the cell, covering 2.1.1 Transport across cell membranes, 2.1.2 Mitosis and the cell cycle, 2.1.3 Importance of cell differentiation, and 2.1.4 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.