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    4 Chapter11 4 Chapter11 Presentation Transcript

    • Chapter 11 Introduction to Genetics Julianna Archacki Alexandria Tsang
    • 11-1 The Work of Gregor Mendel
      • Gregor Mendel’s peas
      • Genes and Dominance
      • A trait like seed color or plant height.
      • The offspring of crosses between parents
      • with different traits is hybrid .
      • Segregation is separation of alleles during gamete formation.
      • Gamete is a cell involved in sexual reproduction .
    • 11-2 Probability and Punnett Squares
      • Genetics and probability
      • Probability can be used to measure the outcome of genetic crosses.
      • Punnett Squares
      • BB,bb is Homozygous.
      • Bb is Heterozygous.
      • All the tall plants have the same Phenotype .
      • Genotype is genetic makeup of an organism.
    • 11-3 Exploring Mendelian Genetics
      • Independent Assortment
      • The genes for different traits can segregate independently during the formation of gametes.
      • Incomplete Dominance
      • One allele is not completely dominant over another.
      • Codominance
      • Both alleles give to the phenotype of the organism.
      • Multiple Alleles means genes more than 2 alleles then others.
      • Polygentic Traits means traits controlled by 2 or more genes. Many traits are made by the interaction of different genes.
    • 11-4 Meiosis
      • Meiosis is a process of reduction
      • division in which the number of
      • chromosomes per cell is cut
      • in half through the separation
      • of homologous chromosomes
      • in a diploid cell.
    • 11-5 Linkage and Gene Maps
      • The chromosomes assort independently; individual genes do not.