ZOL341_SS07_Lecture07 - Last Class Mendel Dihybrid Crosses...

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Last Class Mendel Dihybrid Crosses Epistasis Gene interaction Pedigrees Probabilities
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Biparental Inheritance
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Uniparental inheritance Pattern of inheritance from only one parent (Y-linked traits) ~ Paternal inheritance
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Maternal Effect Snail – Limnaea peregra
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Maternal Effect Shell coiling in the snail Limnaea The direction of shell coiling is controlled by the mother’s nuclear genotype
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Maternal Inheritance Maternal Effect – mothers genome codes for offspring's phenotype Maternal Inheritance – Hereditary determinants of a trait are extranuclear Extranuclear inheritance aka Cytoplasmic inheritance
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Cytoplasmic Inheritance Non-mendelian inheritance of stuff outside of the nuclease Eukaryotes in general Mitochondria Plants Chloroplasts
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The Organization of the Cell
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Cytoplasmic inheritance
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The Power Plant: Mitochondria mtDNA cpDNA
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mtDNA and evolution The Burning Question (Chapter 20)
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Who is the donkey more closely related?
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