07_Mendel_2 - &2)93(2%0%1#$(23"4%5(6%7%8%7 Mendelian...

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Mendelian Genetics Mendel’s Principles Two trait experiments "# $%&#'( )*+,-.* /(012133
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The principle of Segregation Monohybrid cross
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R = Dominant allele for seed shape (round) r = Recessive allele for seed shape (wrinkled) Round-seeded Father Round-seeded Mother F 1 generation Gametes 1/2 1/2 1/2 1/2 F 2 generation Meiosis Fertilization
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(a) A cross between two homozygotes (b) A cross between two heterozygotes Homozygous mother Female gametes Meiosis R = Dominant allele for seed shape (round) r = Recessive allele for seed shape (wrinkled) Homozygous father Meiosis Male gametes R = Dominant allele for seed shape (round) r = Recessive allele for seed shape (wrinkled) Heterozygous mother Female gametes Heterozygous father Male gametes
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Trait Phenotypes Seed shape Round Wrinkled Seed color Pod shape Pod color Yellow Green Inflated Green Constricted Yellow Two Traits
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R = Dominant allele for seed shape (round) r = Recessive allele for seed shape (wrinkled) Y = Dominant allele for seed color (yellow) y
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