Mendelian Genetics part 1 - Genetics: Mendelian Genetics:...

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1 Genetics: Genetics: Mendelian Mendelian Genetics (1) Genetics (1) Patterns of Inheritance Patterns of Inheritance Outline 1. Key concepts 2. A few terms 3. Mendel’s Experimental Approach 4. Monohybrid 5. Dihybrid ___________________________________________ 6. Extending Medelian Genetics 7. Mendilian Inheritance in Humans 8. Key Terms 9. Conclusions Key Concepts: Key Concepts: 1. Genes are units of information about inherited traits 2. Each gene has a particular location on a particular chromosome 3. During meiosis, paired genes are moved apart 4. Gregor Mendel found evidence for gene segregation
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2 Key Concepts: Key Concepts: 5.Homologous chromosomes are independently distributed and assorted during meiosis 6.Not all traits are clearly dominant or recessive but can be partially dominant or codominant A Few Genetics Terms A Few Genetics Terms A Few Genetics Terms A Few Genetics Terms Gene – function unit codes some trait. Alleles - one of alternative forms of a particular gene True-breeding - produce offspring consistently identical to the parent with respect to certain defined characters after generations Homozygous – carrying two copies of the same allele of a given gene (= True breeding) Heterozygous - carrying two different alleles of a given gene
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3 A Few Genetics Terms A Few Genetics Terms Dominant - allele that expresses itself Recessive - an allele that is masked Genotype - an organism’s allelic (genetic) makeup Phenotype - the outward appearance or expression of an
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This note was uploaded on 02/16/2010 for the course BIO 49970 taught by Professor Chinnery during the Spring '10 term at University of Texas at Austin.

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Mendelian Genetics part 1 - Genetics: Mendelian Genetics:...

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