Download Meiosis

Topic: Cellular Reproduction
Aim: How does meiosis occur?
Do Now: List the steps of mitosis, sketch the
pictures below and label each step.
•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
To maintain normal
chromosome number once
fertilization occurs
23
23
46
•A.K.A. Gametes
•Examples: human egg and
sperm cells
•Function is to fertilize
•Used to carry out sexual
reproduction
23__chromosomes
•Have ___
each
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
Meiosis I
•Prophase I
•Metaphase I
•Anaphase I
•Telophase I
Meiosis II
•Prophase II
•Metaphase II
•Anaphase II
•Telophase II
To reduce chromosome number
START
2n = ____
46
•Called the Diploid #
END
23
n = ____
•Called the Haploid #