Meiosis. Honors Biology Spring 2013. Warm-Up. With a neighbor, discuss the following: What is meiosis? How does it differ from mitosis?. Essential Questions. What is meiosis and why is it necessary? What are the stages of meiosis? How does meiosis compare to mitosis?.
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What is meiosis and why is it necessary?
What are the stages of meiosis?
How does meiosis compare to mitosis?
1. Body cells
2. Contains homologous chromosomes
B. Haploid cells
1. Sex cells
2. contains one member of each pair
A. Meiosis - formation of sex cells
1. Meiosis is cell division that results in a gamete containing half the number of chromosomes of its parent.
2. Meiosis includes 2 steps that each closely resemble corresponding steps in mitosis.
Meiosis I - reduction division
1. Interphase I
2. Prophase I
3. Metaphase I
4. Anaphase I
5. Telophase I
exchange of part of
to opposite poles
cells = ½ the number of
chromosomes as parent cell
Meiosis II - separation of chromatids
1. Interphase II
2. Prophase II
3. Metaphase II
4. Anaphase II
5. Telophase II