The cell cycle, mitosis and meiosis
Answers are for parents and teachers.
1
Write the 4 phases of mitosis with one key feature each.
Prophase: chromosomes coil; metaphase: at the equator; anaphase: chromatids separate; telophase: nuclei re-form.
2
A cell has 2n = 16. How many chromatids are there after the S period?
32
3
How many cells form if 1 cell divides by mitosis 6 times in succession?
64
4
Compare mitosis and meiosis on three features.
Mitosis: 1 division, 2 diploid cells, genetically identical. Meiosis: 2 divisions, 4 haploid cells, genetically different.
5
Why do mother and daughter cells have the same genes in mitosis?
DNA is copied exactly in the S period and the chromatids are shared equally.