In this topic we will examine a second List, （在这个主题我们将检查第二个列表,）.pdfVIP

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2017-09-02 发布于浙江
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In this topic we will examine a second List, （在这个主题我们将检查第二个列表,）.pdf

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In this topic we will examine a second List, （在这个主题我们将检查第二个列表,）

Meiosis and Sexual Life Cycles Objective # 1 In this topic we will examine a second type of cell division used by eukaryotic cells: meiosis. List, describe, diagram, and identify the stages of meiosis. In addition, we will see how the 2 types of eukaryotic cell division, mitosis and meiosis, are involved in transmitting genetic information from one generation to the next during eukaryotic life cycles. 1 2 Objective 1 Objective 1 Overview of meiosis in a cell where 2N = 6 Only diploid cells can divide by meiosis. We will examine the stages of meiosis in DNA duplication a diploid cell where 2N = 6 during interphase Meiosis involves 2 consecutive cell divisions. Since the DNA is duplicated Meiosis II only prior to the first division, the final result is 4 haploid cells: Meiosis I 3 After meiosis I the cells are haploid. 4 Objective 1, Stages of Meiosis Objective 1, Stages of Meiosis Prophase I: Chromosomes condense. Because of replication during interphase, each chromosome consists of 2 sister chromatids joined by a centromere. Synapsis – the 2 members of each homologous pair of chromosomes line up side-by-side to form a tetrad consisting of 4 chromatids: 5