BY5.4 Monohybrid Inheritance, Dihybrid Inheritance and Codominance

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1st law of inheritance:

  • law of segregation
  • the characteristics of an organism are determined by fcators that occur in pairs
  • only one of a pair of factors can be present in a singl gamete
  • inheritance of a single pair of contrasting charcteristics
  • produces a 3:1 ratio

Gregor Mendel used peas because:

  • they produce many offspring
  • have a short lifecycle
  • have strong contrasting characteristics
    • Tall - Small
    • Smooth - Wrinked
    • Green - Yellow
  • an example of a discontinuous variation
    • controlled by a…

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