STUDY QUESTIONS
NUCLEAR DIVISIONS
1. What is the result, genetically, of mitosis? Meiosis?
2. What would happen if a cell underwent mitosis but no cytokinesis?
3. If there are 16 chromosomes in an animal cell in the G1 stage of the cell cycle, what is the diploid
number of chromosomes for this species. The haploid number?
4. How much DNA is present in a G2 nucleus, compared to a G1 nucleus?
5. A nucleus containing 88 chromatids at the start of mitosis Would produce nuclei
containing how many chromosomes after mitosis was over? If the same nucleus
were at the beginning of meIosis, how many chromosomes would each of the four
daughter nuclei have at the end?
6. What are the two phases of meiosis that are the source of genetic variation in the
Tour resulting daughter cells, and why?
7. Draw a picture of a diploid cell with eight chromosomes (four pairs of
homologues) at metaphase I in meiosis. Your diagram should include different
shading for maternal and paternal homologues, different centromere positions and
chromosome sizes among the homologous pairs, and crossing over in two of the pairs of homologues.
Next, draw four products or this Meiosis.