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Published byEmory Maurice Shepherd Modified over 9 years ago
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Heredity Chapter 29
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Genetics Terminology Chromosome Homologous Chromosome Autosomal chromosomes Sex chromosomes Gene
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Genetics Terminology Alleles Dominant Recessive Genotype Homozygous dominant (AA) Heterozygous (Aa) Homozygous recessive (aa) Phenotype
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Sources of Genetic Variation Law of Independent Assortment
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Independent Assortment
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Sources of Genetic Variation Law of Independent Assortment Law of Segregation Crossing-over during Prophase I
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Crossing-Over
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Sources of Genetic Variation Law of Independent Assortment Law of Segregation Crossing-over during Prophase I Random fertilization
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Sources of Genetic Variation Law of Independent Assortment and Law of Segregation results in: 8,388,608 or (2 23 ) different gametes produced by each parent Random fertilization combined with independent assortment and the segregation results in 70,368,744,000,000 or (2 23 ) 2 possible offspring Crossing-over during Prophase I the number of possible offspring jumps to: 4,951,760,200,000,000,000,000,000,000 or (4 23 ) 2
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Types of Inheritance Dominant Recessive Inheritance Incomplete Dominance Multiple-Allele Inheritance with Codominance Sex-linked Inheritance Polygenic Inheritance
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Patterns of Inheritance
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Examples of Dominant versus Recessive Traits
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Co-dominance
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Sex Chromosomes
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Polygenic Inheritance
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Solving Genetics Problems Be able to perform basic genetic problems using the Punnett Squares for each of the following types of inheritance: Dominant-Recessive Inheritance Multiple Allele with Codominance Sex-linked Inheritance
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Genetic Screening Amniocentesis Chorionic Villi Sampling
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Amniocentesis
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Chorionic Villi Sampling
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Genetic Screening Amniocentesis Chorionic Villi Sampling Karyotype
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Karyotyping
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Genetic Screening Amniocentesis Chorionic Villi Sampling Karyotype Pedigree Analysis
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Genetic Disorders Non-disjunction Turner’s syndrome Klienfelter’s syndrome Down syndrome Triplo-X
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Genetic Disorders Autosomal Dominant Neurofibromatosis Huntington syndrome
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Genetic Disorders Autosomal Recessive Cystic fibrosis Tay-Sachs Phenylketonuria (PKU)
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Genetic Disorders Sex-linked Colorblindness Hemophilia Duchene’s muscular dystrophy Male pattern baldness
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