outline 21+22

outline 21+22 - A Linkage B Recombinant types C Parental...

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Tejas Patel Lectures 21+22 Outline 11/30/11 Basic Principles of Heredity I. Mendel’s Principles of Inheritance A. phenotype, genotype, P generation, F1 generation, F2 generation B. dominance, recessive, homozygous, heterozygous C. monohybrid cross, dihybrid cross, Punnett square, test cross D. chromosome theory of inheritance 1. inheritance can be explained by assuming that genes are linearly arranged in specific locations along the chromosomes II. Using Probability to Predict Mendelian Inheritsnce A. Product rule: probability of 2 independent events occurring together is calculated by multiplying the probabilities of each event occurring separately (and) B. Sum rule: probability of an outcome that can be obtained in more than one way is calculated by adding the separate probabilities (or)
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Unformatted text preview: A. Linkage: B. Recombinant types C. Parental types: identical to gametes produced by P generation D. Sex chromosomes: contain major sex determining genes E. Autosomes: chromosomes other than the sex chromosomes F. Hemizygous: males having only one copy of each X-linked genes G. Barr body: dense, metabolically inactive X chromosome IV. Extension of Mendelian Genetics A. Incomplete dominance 1. an F1 heterozygote has a phenotype intermediate between its parents 2. ex. red rose & white rose produce pink rose B. Codominance 1. F1 heterozygote simultaneously expresses phenotypes of both types of homozygotes 2. Human blood types a) Type A has genotypes IAIA, IAi b) Type B has genotypes IBIB, IBi c) Type AB has genotype IAIB d) Type O has genotype ii...
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