Genetic variation in diploid organisms fusion of

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Genetic Variation in Diploid Organisms Fusion of sperm and egg results in unique offspring. But not only because the young are a product of two individuals with different genetic makeup . Meiosis “shuffles” the genes so that the an individual’s gametes are genetically different from one another. From the Virtual Cell Biology Classroom on ScienceProfOnline.com Image: Meiosis diagram , Marek Kultys How is this shuffling accomplished?
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Genetic shuffling of Meiosis I In addition to a new combination of chromosomes resulting from fertilization , there are also events in Meiosis I that shuffle the genes. 1. Crossing over in Prophase I. 2. Independent assortment in Metaphase I. From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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_______ ______ Homologues break at identical locations, then rejoin opposite partners. This creates new combinations of the alleles on each chromosome. Occurs randomly several times on every chromosome. Results in mixing of the genes you inherited from your parents. Image: Meiosis diagram , Marek Kultys ; Crossing over , Thomas Hunt Morgan, Molecular crossing over , David Hall From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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__________ _________ HELP! Show me a video!
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Mitosis vs. Meiosis 2n Clone Same genetic information in parent cell and daughter cell. Give me another one just like the other one! 1n Daughter cells different from parent cell and from each other. Daughter cells have ½ the number of chromosomes as somatic cell. Shuffling the genes (Mix it up!) From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Drawing and Labeling Chromosomes Sister Chromatid Replicated Uncondensed Chromosome (chromatin) Sister Chromatid Centromere Unreplicated Uncondensed Chromosome (chromatin) From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Drawing & Labeling Homologous Chromosomes Unreplicated, Condensed, Homologous Chromosomes Replicated, Condensed, Homologous Chromosomes From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Meiosis Demo & Practice Break up into groups & get kit.
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