1. Topic: Cellular Reproduction Aim: How does meiosis occur?
Do Now: List the steps of mitosis, sketch the pictures below and label each step.

2. Meiosis is the type of cell division by which sex cells (eggs and sperm) are produced.
Meiosis involves a reduction in the amount of genetic material.
A.K.A. reduction division
Meiosis
To maintain normal chromosome number once fertilization occurs
WHY reduce???? 23 23 46

3. SEX CELLS A.K.A. Gametes Examples: human egg and sperm cells
Function is to fertilize
Used to carry out sexual reproduction
Have ___ chromosomes each
23__

4. Meiosis consists of two successive nuclear divisions with only one round of DNA replication.46
Parent cell 92 46 46
4 Daughter cells 23 23 23 23

5. Why only one Interphase?
Phases of Meiosis
Meiosis I
Prophase I
Metaphase I
Anaphase I
Telophase I
Meiosis II
Prophase II
Metaphase II
Anaphase II
Telophase II
Why only one Interphase?
To reduce chromosome number

7. How do the chromosomes change
during meiosis?
END
START 46
2n = ____
Called the Diploid # 23
n = ____
Called the Haploid #