Chromosomes, Mitosis, and Meiosis 6.1. Karyotype – Image of all the chromosomes in a cell Homologous chromosomes – pair of matching chromosomes.

Chromosomes, Mitosis, and Meiosis6.1

Karyotype – Image of all the chromosomes in a cell

Autosomes – Chromosomes 1-22

Sex Chromosomes – #23

Homologous chromosomes – pair of matching chromosomes

Somatic cells

Gametes

-Body cells

-Reproductive cells

Life Cycle of a cell

Mom gave

Dad gaveChromatid 1 Chromatid 2

You

Interphase

Mitosis Meiosis

Asexual reproduction: identical cells

Involved in Sexual reproduction:

Produces genetically unique cells

Results in Diploid cells

Results in Haploid cells

Diploid Cell – Cell that has 2 copies of each chromosome (2n).

Haploid Cell – Cell that has 1 copy of each chromosome (n).

Spermatogonia• Diploid cells in testies of

males produce sperm

Oogonia• Diploid cells in ovary of

females make eggs

Meiosis

“Houston, we have touchdown”

Zygote- A fertilized egg

Please leave the lab in the bag.Thank you

Teacher

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

12. What process is this

Meiosis

13. What is another name for asexual reproduction

Mitosis

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

2n

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

n

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

Zygote

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

Oogonia

18. How many chromosomes does a human have?

19. Draw Meiosis using chromosome 1 and 2

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