Lecture_6,_20081

Lecture_6,_20081 - Metaphase II Anaphase II: Chromatids...

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Metaphase II
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Anaphase II: Chromatids separate (now becoming discrete chromosomes) Spindles pull them to opposite poles of cell Note: chromatids in Meiosis II are not identical
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Telophase II: Chromosomes reach the poles They start to uncoil and nuclear envelope reforms Now we have 4 haploid gametes , each with 1 set of genomic information
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Telophase II : 4 daughter cells
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Cytokinesis after Telophase II The end result here is four haploid cells – gametes Every genome is different because of crossing over
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Why go through both meiosis I and meiosis II? (why replicate chromosomes before meiosis?) RECOMBINATION Crossing over means that every chromosome has a mix of genetic material from both parents
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On the board: draw the steps for Meiosis in a diploid cell where 2n = 4
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Added info We went over independent assortment of non-homologous chromosomes
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of: mitosis, meiosis I and meiosis II in a diploid cell? How could you differentiate mitosis in a
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This note was uploaded on 01/07/2012 for the course BIO 187 taught by Professor Douglasgreen during the Fall '07 term at ASU.

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Lecture_6,_20081 - Metaphase II Anaphase II: Chromatids...

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