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Unformatted text preview: M i tosis and Me iosis Worksheet
M i tosis
1. Label the following chart with G1, G2, S, and M phases. Wri te one sentence about the purpose of each phase in the cell cycle. 2. Why must a cell undergo mitosis? List at least 2 reasons. ______________________________ 3. A 2N=4 cell has chromosomes that look like this: Draw what the cell looks like after S phase. Label chromatid, pair of sister chromatids, chromosome, and centromere in your drawing. Bio93 Discussion Week 6 11/01/10 How many chromosomes are in the cell now? ______________________ 4. Draw what this cell will look like in the following phases of mitosis. Metaphase Anaphase Daughter Cells Are these daughter cells diploid or haploid? _____________________ How many chromosomes are in each daughter cell?_______________________ Meiosis
1. Why must a cell undergo meiosis?__________________ 2. For the same starting cell with 2N=4 above, draw the following phases of meiosis. Metaphase I Telophase I Metaphase I I Telophase I I Bio93 Discussion Week 6 11/01/10 3. In the cells above, wri te "2N" next to cells that are diploid and an "N" next to the cells that are haploid. Does the first or second division cause haploidy? ______________________ 4. Fill in the following chart for the number of chromosomes and number of chromatids that would be present at each stage Cell beginning with 10 chromosomes Chromosom es Metaphas e of mitosis Telophase of mitosis Telophase I of meiosis Telophase I I of meiosis Chromati ds Cell beginning with 46 chromosomes Chromosom es Chromati ds Cell beginning with 2N chromosomes Chromosom es Chromati ds Bio93 Discussion Week 6 11/01/10 ...
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This note was uploaded on 11/22/2010 for the course BIOLOGY SC Bio Sci 93 taught by Professor Dr.dianeo'dowdanddr.rahulwarrior during the Fall '10 term at UC Irvine.
- Fall '10