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9. Genetic Inheritance in Plants

Inheritance in pea plants

Mendel followed the inheritance of 7 traits in pea plants (Pisum sativum). He chose traits that had 2 forms:

  • Pea shape (round or wrinkled)
  • Pea colour (yellow or green)
  • Flower colour (purple or white)
  • Flower position (terminal or axial)
  • Plant height (tall or short)
  • Pod shape (inflated or constricted)
  • Pod colour (yellow or green).

Mendel began with pure-breeding pea plants because they always produced progeny with the same characteristics as the parent plant. Mendel cross-bred these pea plants and recorded the traits of their progeny over several generations.

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