Unformatted text preview: General Biology IOI - Fall 1008
Dr. Chi-hua Chin. Douglass/ka Lectures only MEIOSIS Please bring colored pens/pencils to lecture! Please refer to the discussion and ﬁgures in Lab. 10 in your lab manual as well as to Chapter 10
in Solomon. I. Mitosis and Meiosis: General Principles and Differences A. What is the genetic purpose of mitosis? Of memsis?
B. Can haploid cells undergo mitosis? Meiosis?
C. What cell type does mitosis occur in‘.’ Meiosis? II. Important Structures associated with mitosis and meiosis. Brief overview B. Centromeres and telomeres
C. Homologous chromosomes.
l. The karyotype (Fig. 16-]; Lab 10. p. [6) a. How can homologous chromosomes be recognized in a karyotype'.’ b. What are autosomes? c. Are the two types of human sex chromosomes (X chromosomes and Y chromosomes) strictly homologous to each other? D. Centrioles ;
E. Spindle fibers *
F. Metaphasc plate ' 3
G. Cytokinesis (separation of cytoplasm to form two daughter cells). A. Chromosomes lll. Homologous vs. sister chromatids
IV. Stages of Mitosis l. PMAT mnemonic (Put My Answer There) for Prophase. Metaphase, Anaphase. Telophase
o ' V. Stages of Meiosis l. Prcmeiotie interphase. _
a. DNA replicates, two centrioles. Prepares cell for onset of meiosis l. l. Meiosis l: Prophase l
a. Leptotene.lpaehytene. zygotene. diplotene. diakinesis stages
' b. How is Prophase l of meiosis like mitotic prophase'? How is it different? ...
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- Spring '10