1. Monday 11/9/2015 Agenda: Cell Cycle and Division!
Activity: Finish Mitosis Packet
Activity: Cell Cycle Quest!!
Homework:
No Homework Tonight!

2. Tuesday 11/10/2015 Agenda: Cell Cycle and Division!
Activity: Meiosis Reading Guide
Homework:
Meiosis Reading Guide due Thursday/Friday 11/12-11/13/2015 for 40 Points
NO SCHOOL ON WEDNESDAY!

3. Meiosis Reading Guide
You are to annotate each paragraph 4 times (there are 4 total paragraphs)
Answer questions 1-18 on the worksheet
This is due TODAY for 40 Points!!

4. Thursday/Friday 11/12-11/13/2015 Agenda: Cell Cycle and Division!
Notes: Meiosis and Meiosis Terminology
Activity: Meiosis Foldable
Activity: Amoeba Sisters with Worksheet
Homework:
No Homework!

5. Q2 WK3 D2
MEIOSIS

6. One parent cell produces four daughter cells.
Meiosis
Meiosis is the type of cell division by which germ cells (eggs and sperm) are produced.
One parent cell produces four daughter cells.
Daughter cells have half the number of chromosomes found in the parent cell

7. There are 2 parts to Meiosis:
During meiosis, DNA replicates once, but the nucleus divides twice.
There are 2 parts to Meiosis:
Meiosis 1
Meiosis 2
The 4 new daughter cells have variation of the parent DNA; this is genetic variation

8. Meiosis Terminology
Karyotype: Arranging of chromosomes from largest to smallest; pairing up the homologous chromosomes
Autosomes: All non-sex chromosomes; (#1-22 for humans)
Sex Chromosomes: Chromosomes that determine the sex of an organism (#23 for humans)
Set (n): # of different chromosomes. REMEMBER: Haploid = 1set, Diploid= 2 sets

9. Karyotype of a human Is this person male or female?
How many sex chromosomes are present?
How many autosome chromosomes are present?
How many homologous pairs of chromosomes are present?

10. Background on Meiosis Meiosis involves 2 divisions of the nucleus
Meiosis STARTS with HOMOLOGOUS CHROMOSOMES
Homologous Chromosomes: They are similar in shape, size & genetic content

11. Meiosis 1: 1st Division of Meiosis
Prophase I: Chromosomes condense, nuclear envelope breaks, homologous chromosomes pair at ends.
***Cross-Over: Part of chromatid on 1 homologous chromosome exchanges with the other chromosome***
This is
Genetic variation
DRAW ME 

12. Meiosis 1: 1st Division of Meiosis
Metaphase I: Homologous chromosomes move to center of the cell by the spindle fibers.
Anaphase I: Homologous chromosomes separate and move to opposite poles, BUT sister chromatids stay together. A set of chromosomes moves to each pole
Telophase I: The spindle fibers disappear, cells begin to cleave; still, two sets of chromosomes are at opposite poles

13. Meiosis 1

14. End of Meiosis I
Once Meiosis I is complete, cytokinesis occurs and the cell splits into 2 haploid cells. These 2 cells enter Meiosis II

15. Meiosis II
Prophase II: A new spindle forms around the chromosomes (no longer HOMOLOGOUS CHROMOSOMES)
Metaphase II: Chromosomes line up at center & spindle fibers attach to centromere
Anaphase II: Centromeres split, chromatids move to opposite poles of cell
Telophase II: Nuclear envelope forms around each set of chromosomes & spindles retracts, cell begins cytokinesis

16. Result of Meiosis II 4 HAPLOID cells form as a result of Meiosis II
Haploid = cell containing 1 set of chromosomes

17. Meiosis II: 2nd division of Meiosis

18. Prophase II

19. Metaphase II

20. Telophase II

21. Differences in Mitosis & Meiosis
Asexual
Cell divides once
Two daughter cells form
Genetic informationS is identical
Meiosis
Sexual
Cell divides twice
Four haploid daughter cells form
Genetic information is different