Ssc Biology Chapter 2 Hand Note Exclusive -

“Why can’t a mature nerve cell divide?”
Answer in hand note format: Because it is highly differentiated and has lost centrioles. It remains in the G0 phase of the cell cycle permanently.

Your exclusive hand note needs a side-by-side comparison. Draw one vertical line; put Mitosis on the left, Meiosis on the right.

| Aspect | Mitosis | Meiosis | | :--- | :--- | :--- | | Purpose | Growth, repair, asexual reproduction | Gamete (sperm/egg) formation | | Location | Somatic (body) cells | Reproductive organs | | Division # | 1 division | 2 divisions (Meiosis I & II) | | Daughter cells | 2 diploid (2n) cells | 4 haploid (n) cells | | Genetic variation | No (identical clones) | Yes (crossing over) |