01Genetics1summer10

01Genetics1summer10 - -Presence of Y or y allele determines...

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2 Budgerigars (Budgies) Genotype: genetic characteristics Phenotype: physical characteristics Mitosis
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3 Meiosis I Meiosis II Mendel’s frst law The Law of Segregation : the two copies of a gene separate when an individual makes gametes. Mendel’s second law The Law of Independent Assortment : Alleles of different genes assort independently during gamete formation.
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4 Evolution by Natural Selection (Conditions 1 and 2) Phenotypic variation in the population -blue and green birds -Variation result of different alleles present in the population Phenotypic variation has a genetic basis
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Unformatted text preview: -Presence of Y or y allele determines bird coloration Codominance 5 Crossing over during meiosis I recombines alleles into new combinations within gametes. Pleiotropic gene affects coat color, eyes, and voice in Siamese cats. Polygenic traits--one trait determined by multiple genes Results in continuous variation (Quantitative trait) 6 Genetic and environmental effects on body color Phenotypic Plasticity Mayfly Abdomens raised at different water temperatures...
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This note was uploaded on 07/29/2010 for the course BIS 2B taught by Professor Strong during the Summer '08 term at UC Davis.

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01Genetics1summer10 - -Presence of Y or y allele determines...

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