Mitosis review

Plant Mitosis

Look for mitotic cells in the meristem (above the root cap) of Allium (onion) root tip.

Time Length for the Stages of Mitosis p. 86

7. Assume average cell cycle time of 960 minutes (16 hours).

Complete Table 1 in data sheet: do up to 3 trials. p. 92

Animal Mitosis

Look for mitotic cells in the whitefish blastula, an early stage of animal development.

4. Answer questions in data sheet. p. 87

Meiosis review

1. Use 12 pipe cleaners to represent 3 pairs of homologous chromosomes, each with 2 chromatids.

   Simulate the stages of meiosis with the pipe cleaners.

12. Do 2 trials: in Metaphase I, try different orientations of tetrads (paired homologous chromosomes, consisting of 2 chromosomes with 2 chromatids each) p. 89.

    At the end of Meiosis II, the 4 "daughter" cells are haploid and genetically different from each other.

13. Answer the questions on the data sheet. Complete Table 2. (p. 98).