1. MEIOSIS
Gamete Formation

2. Process of nuclear division that reduces the number of
Meiosis=
Process of nuclear division
that reduces the number of
chromosomes in new cells
to HALF the number in the
original cell.
Click here to see fertilization and chromosome numbers

3. Female Gamete=Egg Cell
Meiosis results in
Sex Cells
Female Gamete=Egg Cell
Male Gamete =
Sperm Cell

4. Cells undergo all phases of interphase
Then they enter Meiosis which involves 2 distinct cell divisions

5. Prophase I (crossing over) Metaphase I
Stages of Meiosis
Meiosis I
Prophase I (crossing over)
Metaphase I
Anaphase I (homologous chromosomes separate)
Telophase I and cytokinesis

6. Portions of chromatids break off and attach to adjacent
Crossing Over
Portions of chromatids
break off and
attach to adjacent
chromatids on the
homologous
chromosome
occurs during prophase I

7. Meiosis I Interphase Prophase I Metaphase I Anaphase I Telophase I
Cytokinesis
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8. Anaphase II (sister chromatids separate)
Stages of Meiosis
Meiosis II
Prophase II
Metaphase II
Anaphase II (sister chromatids separate)
Telophase II and cytokinesis (4 haploid cells result)

9. Meiosis II Coming from Meiosis I Prophase II Metaphase II Telophase II
Anaphase II
Cytokinesis
Images from:

10. Meiosis 1 = Separates Homologous Chromosomes Meiosis 2 =
Separates Sister
Chromatids
Image from:

11. four unique daughter cells are produced
Summary
At the end of meiosis II,
four unique daughter cells are produced
(4 haploid cells) * *