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webnotes_lec5and6_genetics_bs110_091307

webnotes_lec5and6_genetics_bs110_091307 - Could you do the...

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Could you do the following? Draw the chromosomes at metaphase of Mitosis, Meiosis 1, and Meiosis 2 Draw the products of Mitosis, Meiosis 1, and Meiosis 2 Label: homologous chromosomes - centromeres sister chromatids - alleles Determine: Number of cells - Ploidy n Which cells/chromosomes are genetically identical, and which are genetically different
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Vocabulary Mitosis G1 G2 Metaphase Anaphase Cytokinesis Meiosis 1 Meiosis 2 Homologous chromosome Sister Chromatids Replication (duplication)
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How would you draw each?
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—S—P—S—P—S—P—S—P T G A T Original Strand 1: ----- T - G - A - T----- Above can also be represented as: Sugars (S) and phosphates (P) have been dropped for simplicity “T-G-A-T” represents allele of interest “-----” represents continuation of DNA strand on either end of the isolated allele
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DNA Replication Step 1: Enzymes break bonds btw bases helix unwinds, exposing free bases Step 2: free nucleotides pair with exposed bases Occurs simultaneously on both strands
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