1. Meiosis

2. Meiosis formation of gametes sperm and egg (haploid)
fertilization—uniting to form a diploid zygote
“reduction and division”

3. Fertilization
Sperm and egg uniting

4. Haploid vs. Diploid
Cells having two sets of chromosomes are diploid (2n).
Haploid cells (1n) have only one set of chromosomes.

7. Meiosis Phases
Meiosis I includes prophase I, metaphase I, anaphase I, and telophase I.
Meiosis II includes prophase II, metaphase II, anaphase II, and telophase II.

12. Development of Gametes
Spermatogenesis is the process by which sperm cells are produced.
Oogenesis is the process that produces mature egg cells.

14. Chromosome Numbers Sex Chromosomes
Sex chromosomes are chromosomes that determine the sex of an organism.
Autosomes
All of the other chromosomes in an organism

15. Female
Male

16. Down Syndrome Karyotype (trisomy 21)

17. Crossing Over
Crossing-over, which is when portions of homologous chromosomes exchange genetic material, occurs during prophase I and results in genetic recombination.

19. Mitosis vs. Meiosis
Meiosis leads to four haploid cells (gametes) rather than two diploid cells as in mitosis.

20. Mitosis vs. Meiosis
mitosis v meiosis