bio lecture 2 - BIO 311D LECTURE 2 Patterns of Inheritance...

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Click to edit Master subtitle style BIO 311D LECTURE 2 Patterns of Inheritance
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Blending inheritance model Large population of 20mph bunnies
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Add one 30mph bunny
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+ If blending inheritance happens… 30mph bunny 20mph bunny = 25mph bunnies
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Next generation… + 25mph bunny 20mph bunny = 22.5mph bunnies
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After 11 generations… 20.003mph bunnies + =
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Gregor Mendel § Lived 1823-1884 § Performed well in school § To continue studies, entered Augustinian monastery and became a monk. § Became an excellent botanist (plant biologist) § Became interested in how inheritance worked § Performed new experiments from 1857-1865 to deduce principles of inheritance in pea plants.
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Terminology: Allele – the specific type of a characteristic (each individual has 2 alleles for each gene) Genotype – the genetic makeup Phenotype – the outside appearance Homozygous dominant – two dominant alleles Homozygous recessive – two recessive alleles Heterozygous – one dominant and one recessive allele
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Generations: Parent : genotypes – PP , ww (always a dominant homozygote crossed with a recessive homozygote) phenotypes – purple , white F1 generation : genotypes – P w (always heterozygous) phenotypes – all purple P w P w P w P w w w P P Punnett squares Offspring of parents
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bio lecture 2 - BIO 311D LECTURE 2 Patterns of Inheritance...

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