Bio1_15_TraitGeneticsI - 1 2 3 4 5 Self-Quiz 1. Identify...

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Self-Quiz 1. Identify all major differences between mitosis and meiosis. 2. Give 2 specific processes that contribute to variation in offspring, during meiosis. When does each occur? 3. How many eggs are produced in oogenesis? Sperm in spermatogenesis? Overview: Mendelian Genetics • Ch. 11: Mendelian Patterns of Inheritance – Dominance – Human genetic disorders •Pedigrees • Prevailing view – Blending concept of inheritance • Gregor Mendel (1822 – 1884) – Heritable traits •Distinct units of information (genes) •Ratios (genes do not blend) Garden Pea Classical Genetics • Gene locus – Alleles •Dominant •Recessive • Trait – Homozygous ( AA or aa ) •True-breeding lineage – Heterozygous ( Aa ) Classical Genetics • Genotype • Phenotype • Abbreviations for generations P = parental generation F 1 = first-generation offspring 2 = second-generation offspring Assignment 1 • Think, Pair, Share • Topic: In peas, the allele for green pods (G) is dominant over the allele for yellow pods (g) . – What is the genotype of a true-breeding pea plant with yellow pods? Green pods? – What is the genotype of a pea plant that is heterozygous? The phenotype? 9
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This note was uploaded on 01/12/2012 for the course BIOLOGY 1 taught by Professor Teresafinnern during the Fall '11 term at Riverside Community College.

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Bio1_15_TraitGeneticsI - 1 2 3 4 5 Self-Quiz 1. Identify...

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