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LEC2_illustrations(1)

LEC2_illustrations(1) - LECTURE 2 Thursday January 12 More...

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LECTURE 2 Thursday, January 12 More on Mendel Announcements regarding course mechanics Recap of first lecture Key features of chromosomes Mitosis and meiosis – what are the effects on chromosome # – how do these relate to Mendel’s postulates More Mendelian genetics – Dihybrid cross – Mendel’s 4th postulate - independent assortment Assignment 1 and MasteringGenetics
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Mendel’s postulates Unit factors in pairs (DD) Dominance/Recessiveness (Dd) Segregation (D or d has equal chance) Monohybrid cross
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Mendel’s postulates Unit factors (genes) in pairs ( AA ) Dominance/Recessiveness ( Aa ) Segregation ( A or a has equal chance of being transmitted to progeny)
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Mendel’s postulates Unit factors (genes) in pairs ( AA ) Dominance/Recessiveness ( Aa ) Segregation ( A or a has equal chance of being transmitted to progeny) What is the physical basis for these postulates?
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Mendel’s postulates Unit factors (genes) in pairs ( AA ) pairs of genes on homologous chromosomes Dominance/Recessiveness ( Aa ) Segregation ( A or a has equal chance of being transmitted to progeny) What is the physical basis for these postulates?
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