1. The formation of gametes
Meiosis
The formation of gametes
Sections 6.1, 6.2, 6.6

2. Terminology to memorize!
Diploid or 2N- contains a full set of chromosomes, found in somatic body cells.
Haploid or N- contains half of the genetic information, found in gametes

3. Homologous Chromosomes
A pair of chromosomes,
one is inherited from the mother,
one from the father
These daughter cells are diploid!

4. Karyotype- all are homologous 22 pairs of autosomes 1 pair of sex chromosomes

5. The germ cell undergoes two divisions
to form four gametes
Interphase I chromosomes duplicate
Interphase II no duplication

6. Crossing Over Prophase 1 of Meiosis adds genetic variation

7. results in one egg and two polar bodies.
Meiosis in ovaries
results in one egg and two polar bodies.

8. Mitosis vs. Meiosis 2N N

9. Meiosis results in 4 haploid gametes
diploid
Homologous chromsomes N
haploid

10. The goal of meiosis is to form haploid gametes which after sexual fertilization result in a diploid zygote

12. Mitosis vs. Meiosis Mitosis Meiosis Where process occurs
# of cell divisions
# of cells formed
N # of chromosomes
What end cells are called