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Meiosis I: Replication
Interphase I DNA Replication DNA Replication Chromatin a ball of yarn Chromatin a ball of yarn
Prophase I Chromosomes coil and condense Chromosomes coil and condense Form a tetrad (synapsis) Form a tetrad (synapsis)
Metaphase I Tetrads align along equator Tetrads align along equator
Anaphase I Tetrads split Tetrads split Form dyads Form dyads Dyads move to opposite poles Dyads move to opposite poles
Telophase I Cleavage furrow forms Cleavage furrow forms Cell splits (cytokinesis) Cell splits (cytokinesis) Form two diploid daughter cells Form two diploid daughter cells
Meiosis II: Reduction Division
Interkinesis Similar to Interphase I Similar to Interphase I No DNA replication No DNA replication
Prophase II Chromosomes condense and coil Chromosomes condense and coil
Metaphase II Chromosomes align along equator Chromosomes align along equator
Anaphase II Dyads split at centromere Dyads split at centromere Chromatids move to opposite poles Chromatids move to opposite poles
Telophase II Cleavage Cleavage furrow forms furrow forms Cell splits Cell splits Both diploid Both diploid cell splits cell splits Forms 4 haploid daughter cells Forms 4 haploid daughter cells
M phase. DNA at different phases chromatin chromosome histone nucleosome.
Cell Cycle IPMATC. Cell Cycle 3 Parts: – Interphase – Mitosis Prophase Metaphase Anaphase Telophase – Cytokinesis.
Mitosis and the Cell Cycle Cell reproduction. Todays Objectives The student will be able to identify the phases of the cell cycle and mitotic stages by.
The Cell Cycle. Chromosomes Carry genetic information in eukaryotes Carry genetic information in eukaryotes Made of DNA and proteins Made of DNA and proteins.
Meiosis. Meiosis is the type of division which: 1. Reduces the chromosome # from diploid to haploid 2. Is used to produce gametes: eggs and sperm.
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I.Sexual Reproduction --two parents combine. 1. The sex cell from the male parent is sperm. a. Sperm head is almost all nucleus (genetic info) 2. The.
Meiosis and Sexual Reproduction. Sexual Reproduction Diploid Cell A cell that has chromosomes located in similar pairs. These cells are called body cells.
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Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 4.8 Mitosis maintains the chromosome number of the parent.
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MITOSIS where in cells is the genetic material? are chromosomes in nucleus genetic material? even though they divide all cells have the same number of.
Lecture 2 Cell Structure, Mitosis and Meiosis. Study Questions - Lecture 2 1)Describe the major components of a typical animal cell and their function(s).
AIM: What events take place at each phase of meiosis? DO NOW: What is the difference between gametes and body (somatic) cells? Define Homologous Chromosomes.
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