1. Chromosomes, Mitosis, and Meiosis 6.1

2. Autosomes – Chromosomes 1-22
Karyotype – Image of all the chromosomes in a cell
Autosomes – Chromosomes 1-22
Sex Chromosomes – #23
Homologous chromosomes
– pair of matching chromosomes

3. Somatic cells
-Body cells
Gametes
-Reproductive cells

4. Life Cycle of a cell

5. Diploid Cell – Cell that has 2 copies of each chromosome (2n).
Mom gave
Dad gave
Chromatid 1
Chromatid 2
You
Interphase
Asexual reproduction: identical cells
Involved in Sexual reproduction:
Produces genetically unique cells
Results in Diploid cells
Results in Haploid cells
Mitosis
Meiosis
Diploid Cell – Cell that has 2 copies of each chromosome (2n).
Haploid Cell – Cell that has 1 copy of each chromosome (n).

6. “Houston, we have touchdown”
Oogonia
Diploid cells in ovary of females make eggs
Spermatogonia
Diploid cells in testies of males produce sperm
Meiosis
“Houston, we have touchdown”

7. Zygote- A fertilized egg

8. Please leave the lab in the bag. Thank you 

10. Teacher
Using whiteboards and chromosome beads. Ask questions and have 1 student draw and hold up board. Other represent with beads.

11. 12. What process is this
Meiosis

12. 13. What is another name for asexual reproduction
Mitosis

13. 14. Draw a Diploid cell showing chromosome 1 inside it.

14. 15. Draw a Haploid cell showing chromosome 1 inside it.

15. 16. What is produced when an egg and a sperm combine?
Zygote

16. 17. What is meiosis called when it occurs in females?
Oogonia

17. 18. How many chromosomes does a human have?

18. 19. Draw Meiosis using chromosome 1 and 2

19. 20. Using only 1 chromosome, draw a picture of a Karyotype for a diploid cell.