Lab 7 Write Up - Drew Rasmussen Penny Louka Biology 191 Lab...

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Drew Rasmussen Penny Louka Biology 191 Lab 11 October 2010 Lab 7: Mitosis and Meiosis: Write Up A. . 1. *** See attached diagrams 2. Chromosomes are made up of two sister chromatids attached at the centromere, and chromatids make up chromosomes when they are attached at the centromere, but as soon as they split they are referred to as sister chromosomes. A chromosome can have two chromosomes, and a chromosome can have 1. When a chromosome splits the two chromatids are called “sister chromosomes.” During meiosis I and the beginning stages of meiosis II chromosomes have 2 chromatids. In mitosis the steps before anaphase contain chromosomes with 2 chromatids. During Telophase in mitosis it is possible for a chromosome to have 1 chromatid. 3. Sister chromatids are identical, homologous chromosomes are identical in size, shape, centromere position, and the way they stain. One homologous chromosome comes from the mother, and the other comes from the father.
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