Mitosis and Asexual Reproduction Notes A. Terms: 1. Cell Cycle: ________________________________________________________ ______________________________division results in formation of new individuals of the species ___________________________________ division results in replacement of old or damaged cells 2. Mitosis: __________________________________________________________ 3. Cytokinesis: _______________________________________________________ 4. Asexual Reproduction: _______________________________________________ ________________________________________________________________________ 5. Chromatin: ________________________________________________________ ________________________________________________________________________ 6. Chromosomes: _____________________________________________________ _____________________________________________________________________ B: There are 5 phases in Mitosis: 1. __________________, 2) _____________________ 3) _______________________, 4) _____________________, 5) ___________________ 1. Interphase: _______________________________________________________ Cells ________________________________________ in size by producing more nucleic acids, proteins, and cellular organelles Chromosomes________________________________________________________, but they can’t be seen Nucleus of the cell is contained within the ________________________________ _______________________________________ are present and duplicate themselves Draw Interphase: 2. Prophase: Double chromosomes become visible - _____________________________ Chromosomes are _________________________________________________________________ _________________________________________________________________ Draw a Chromosome Below: At the beginning, _______________________________ move to opposite poles Aster (star shaped fibers) extend = microtubules ___________________________________________________ (to centromere to pull away chromatids to opposite sides of the cell) By the end, the __________________________________________________ have disappeared Draw Prophase below: 3. Metaphase: Centromeres line up on the ___________________________________ (middle=metaphase plate) By the end, the centromeres __________________________________________ ________________________________________________________________________ Half of each chromosome goes to the opposite side of the cell Draw Metaphase Below: 4. Anaphase: __________________________________________________________________ __________________________________________________________________ Movement is accomplished by the microtubules Movement occurs by shortening of the microtubules Draw Anaphase Below: 5. Telophase: Chromosomes ___________________ and return to previous shape (threadlike) _______________________________________________________________ Draw Telophase Below: (two cells are identical) ***NOTE*** Cytokinesis___________________________________________ _______________________________________________________________________ HERE IS THE WAY TO REMEMBER THE PHASES OF MITOSIS IN ORDER I Punched My Aunt Tilly C. Mitosis in plants: Same as in animals except… Plants have _______________________________________ spindle fibers take their place Asters do not form Cell wall _________________________________________because it is too rigid __________________________________divides the cell into two D. Protein that causes cells to go through the cell cycle is called: ___________________ II. Asexual Reproduction: Occurs only through the process of Mitosis ____________________________________________________________________ A. Where can asexual reproduction be found? a. ________________________________________________ b. ________________________________________________ B. There are 5 different types of asexual reproduction: a. Budding:_________________________________________________; new individuals develop from buds ex – yeast & hydra b. Binary Fission: Most simple form of asexual reproduction; ____________________________________________________________ ____________________________________________________________ c. Spore Formation: Single specialized cells that germinate when released from parent. Usually covered by a protective coating for preservation. d. Regeneration: Ability to _______________________________________ ex – hyrda, planaria, starfish, the bad guy from Terminator 2 e. Vegetative Reproduction: Refers to roots, stems, and leaves. Cells divide then differentiate to produce the same organism f. _____________________________________ Mitosis Quiz Name: ______________________________________ A. What happens during Interphase? ___________________________________ ________________________________________________________________________ B. What happens during Prophase? ____________________________________ ________________________________________________________________________ C. What happens during Metaphase? ___________________________________ ________________________________________________________________________ D. What happens during Anaphase? ____________________________________ ________________________________________________________________________ E. What happens during Telophase? ___________________________________ ________________________________________________________________________