Lecture 32 - BIOL104-04 Principles of Biology I Lecture#32...

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Unformatted text preview: BIOL104-04 Principles of Biology I November 15, 2010 Lecture #32 Ch 12 Patterns of Inheritance Mendel & the Gene • Heredity – Inheritance – Transmission of traits from parents to offspring • Trait – A characteristic of an individual • What are the basic patterns in transmission of traits from parents to offspring? Model organism for genetics studies • Garden peas • Small • Short-lived • Easy to care for • Able to produce many offspring • Easy to manipulate experimentally Self-pollination Cross-pollination Mendel’s methods • Phenotype – Observable features of an individual – Seed shape – Seed color • Pure line – Consists of individuals that produce offspring identical to themselves – Purple flower or white flower – Round seeds or wrinkled seeds Dominant Recessive Mendel’s methods • Parental generation – Adults used in an initial cross • F1 generation – Offspring of parental generation • F2 generation – Offspring of F1 generation • Hybrids – Offspring from matings between true-breeding parents that differ in one or more traits Genetics terms...
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Lecture 32 - BIOL104-04 Principles of Biology I Lecture#32...

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