Date: January 19, 2016 Aim #47: What are the stages of mitosis? HW: 1)Read Chapter 10-2 (Cell Division) pages and Complete Cornell Notes Outline due Wednesday 2)Quarterly Exam Tuesday 1/26 (periods 1 & 7) and Wednesday 1/27 (period 5) 3)Plant Packet due Monday, February 1 st !!! (follow calendar of deadlines) Do Now: Warm-Up Notebook DateTitle of Activity Page # 1/19Intro to Cell Division 81

Date: January 20, 2016 Aim #47: What are the stages of mitosis? HW: 1)Read Chapter 10-2 (Cell Division) pages and Complete Cornell Notes Outline due Wednesday 2)Quarterly Exam Tuesday 1/26 (periods 1 & 7) and Wednesday 1/27 (period 5) –Review Sessions Monday 1/25 7:30AM & 3:15PM 3)Plant Packet due Monday, February 1 st !!! (follow calendar of deadlines) Do Now: Warm-Up Notebook DateTitle of Activity Page # 1/20Intro to Cell Division 81

Aim #47: What are the stages of mitosis? Biology is the only subject in which multiplication is the same thing as division…

1) What is mitosis? Chromosomes Spindle Fibers Mitosis is the process that divides the cell’s nucleus into two, each with a complete set of genetic material from the parent cell.

What are the phases of the Cell Cycle? G1- Cells increase in size and synthesize new proteins and organelles. Cell

What are the phases of the Cell Cycle? S Phase- DNA (chromosomes) are replicated. Centromere Chromatid

What are the phases of the Cell Cycle? G2 Phase- Many of the molecules and organelles for cell division are produced. Centriole G1, S, and G2 Phases are collectively known as: Interphase

What are the phases of the Cell Cycle? M Phase- the cells undergo cell division. What does the “M” stands for? Mitosis The dance of the Chromosomes

Stages of Mitosis: Prophase: 1)The chromosomes become visible. (Condensation) 2)The centrioles separate and Spindle fibers begin to form. 3)The nuclear membrane breaks down. Centriole Spindle Fibers Nuclear Membrane

Stages of Mitosis: Metaphase: 1)The chromosomes line up across the center of the cell. 2)Each chromosome is connected to a spindle fiber at the centromere.

Stages of Mitosis: Anaphase: 1)The spindle fibers separate the chromatids into individual chromosomes and they are moved apart.

Stages of Mitosis: Telophase: 1)The chromosomes gather at opposite ends of the cell. 2) Two new nuclear membranes form. 3)The chromosomes lose their distinct shapes.

Cytokinesis: The cytoplasm pinches and two cells are formed.

What is the end result of Mitosis? 46X + Chromosome Number? ParentDaughter Cell Is the genetic material of the daughter cells identical to the parent? The same number of chromosomes is maintained from one generation to the next. YES

Mitosis Phases Prophase MetaphaseAnaphase Telophase Cytokinesis

Which phase are these cells in? Prophase Anaphase

What phase are these cells in? Metaphase Telophase

9) Animal vs. Plant Cell Mitosis In plants, a Cell Plate forms across the middle of the cell.

Comparing animal and plant Cytokinesis

ANIMAL MITOSIS

PLANT MITOSIS

Brain Pop osis/

Let’s Practice

Interphase Prophase Metaphase (Middle) Anaphase (Away) Telophase (Two)