1-27-09 - 1/27/09 Mitosis: Prophase(p)

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1/27/09 Mitosis: Prophase (p)-  --- Metaphase (m)-  chromosomes align idependently from one another Anaphase(a)-  centromeres divide Meiosis: PI-  synapsis of homologous chromosomes; crossing-over  (i.e. recombination)  between homologous chromosomes MI-  homologous chromosomes remain aligned with one another and non- homologous chromosomes align independently from one another  AI-  centromeres do not divide MII-  chromosomes align independently from one another AII-  centromeres divide Crossing over creates the infinite variability. I. Replication (duplication) of a chromosome a. Replication of a chromosome occurs during Interphase. When a  chromosome replicates, 2 chromatids are formed. The chromatids  are temporarily held together by a centromere. b. DNA (deoxyribonucleic acid)  1. DNA is a double stranded molecule that is twisted upon  itself. 2.
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This note was uploaded on 12/09/2009 for the course ANTH 1001 taught by Professor Tague during the Spring '07 term at LSU.

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1-27-09 - 1/27/09 Mitosis: Prophase(p)

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