Chromosomes

Diploid: contains 2 sets of chromosomesBody cells, 2n

Haploid: contains 1 set of chromosomesGametes, sex cells, n

Sister chromatids- 2 identical chromatids held together by a centromere

Kinetochores: protein complex that develops on either side of centromere.

Phases of Mitosis

Prophase Centrosomes have duplicated Chromatin condenses into chromosomes Spindles forming Nucleolus and nuclear envelope disappear

Metaphase Centromeres/chromosomes aligned along middle Spindles attach to kinetochore

Anaphase Sister chromatids are pulled apart and daughter chromosomes move toward

opposite poles. Cleavage furrow begins to form

Telophase Nuclear envelope and nucleolus reappear. Chromosomes begin to uncoil

cytokinesis

Division of the cytoplasmAnimal cell

Cleavage furrow formsBand of actin filaments (contractile ring), forms a

circular constrictionPlant cell

Golgi apparatus forms vesicles which move along the microtubules to the region of a small disk seen between the 3 daughter plant cells

Cell plate (newly formed plasma membrane) forms between the daughter cells

Mitosis Power Point Quiz

Interphase

Prophase

Metaphase

Anaphase

cytokinesis

Chromosomes align along the middle

Spindle fibers form

Nuclear envelope appears

Chromosomes appear

Chromosomes uncoil

Chromosomes move to opposite poles

Growth and preparation for division

Centromeres divide