Mitosis verses Meiosis (p. 8 packet)
1. To create a copy of a cell.
2. Once
3. Exact copies of the original (diploid)
4. Copies of individual chromatin held together by a centromere
5. Chromatin condenses, spindle fiber forms, nuclear membrane breaks down
6. -----7. Chromosomes line up in the middle of the cell, spindle fiber forms
8. -----9. Centromere splits, spindle fibers shorten, sister chromatids are pulled apart
10.-----11.New nuclear membrane forms, spindle fibers break down, chromosomes relax
12.-----13.NO – it is the last stage of the cell cycle
14.The cytoplasm divides and two new cells are formed (cell membrane pinches off)
15.-----16.To create sex cells with half the number of chromosomes as body cells (haploid cells)
17.Two
18.Sex cells (haploid)
19.In prophase I the homologous chromosomes pair up together; no homologous chrms in
prophase II
20.-----21.In metaphase I the homologous chromosomes line up together in middle of cell; no
homologous chrms in metaphase II
22.-----23.In anaphase I, homologous chrms separate; no homologous chrms in anaphase II
24.-----25.In telophase I, chrms are still copied but total number is half of original; chrms are single
26.------
Meiosis Quiz – Short Answer questions
26. Mitosis produces two new cells. Meiosis produces 4 new cells. The cells created after
mitosis will be diploid (having pairs of chromosomes in them). The cells created after meiosis
will be haploid (having one of a pair of chromosomes.)
27. Compare – meta means middle so chromosomes will line up in the middle of the cell in
both mitosis and meiosis I. Contrast – in mitosis, chromosomes line up independently of each
other (not in pairs), but in meiosis I, homologous chromosomes line up together in pairs!!