1. cell cycle interphase G1, S, G2 mitosis (division of the nucleus)
cytokinesis

2. ZYGOTE - EMBRYO - FETUS - INFANT . . .
GROWTH
AND
DEVELOPMENT:
ZYGOTE - EMBRYO - FETUS - INFANT . . .
REGENERATION
WOUND HEALING
SOME
ASEXUAL
REPRODUCTION
CANCER

3. DNA IN FIRST (PARENT) CELL IS COPIED EXACTLY INTO TWO DAUGHTER CELLS
MAIN IDEA
DNA IN FIRST (PARENT) CELL IS COPIED EXACTLY INTO TWO DAUGHTER CELLS

4. DIPLOID & HAPLOID HAPLOID = N (GAMETES are haploid: SPERM & EGG)
CHROMOSOMES IN BODY CELLS (SOMATIC) = 2N

5. NORMAL HUMAN KARYOTYPE
NUMBERED FROM LONG TO SHORT
1000’S OF GENES ON EACH CHROMOSOME

6. SO HOW DO WE GO FROM 1 CELL TO 2 CELLS?

8. some cells (nerve, muscle) get “stuck” in G1
G1 = gap 1
1st step of interphase
Cell Grows G0
some cells (nerve, muscle) get “stuck” in G1

9. Exact duplication of DNA
s phase
2nd step of interphase
stops growing
synthesis
Exact duplication of DNA
start with 2 of each chromosome
end with 4 of each chromosome (sister chromatids)

10. Chromatin - DNA RNA, various proteins (histones) that form chromosomes during cell division

11. AFTER S-PHASE
1. chromatid
2.centromere
3.short (p)arm
4.long (q) arm
sister
chromatid
chromatid

12. G2
3rd stage of interphase
growth continues

13. mitosis
division of nucleus
prophase
metaphase
anaphase
telophase

14. division of cytoplasm & other organelles
cytokinesis
division of cytoplasm & other organelles

15. “PMAT” PHASES OF MITOSIS

16. 2. centrosomes move to sides 3. spindles form
1. nucleolus (makes ribosomes) has dissolved
2. centrosomes move to sides
3. spindles form

17. 1. nuclear envelope dissolves
PROMETAPHASE
1. nuclear envelope dissolves
2. kinetochores form at the centromere & attach to spindle fibers (one kind of microtubule)
3. Microtubules attach to chromosomes

18. chromosomes “meet” along an imaginary line (metaphase plate)

19. A(part)NAPHASE

20. telophase

21. cytokinesis - back to G1 of interphase dividing cytoplasm & contents
cell plate forms in plants
end of telophase

22. ID red, blue, green & black arrows stages

23. cancer - cells out of control mutation in genes suppresses regulatory proteins of mitosis

24. tumors -

25. Mitosis read chapter 10 – take notes – define vocabulary