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How many contrasting characters did Mendel select for his experiments?

How many contrasting characters did Mendel select for his experiments? Correct Answer 7

The correct answer is 7.

Key Points

  • Mendel selected 7 contrasting characters for his experiment.
  • Sr.No Trait Dominant Allele Recessive Allele
    1 Height Tall (T) Dwarf(t)
    2 Seed Colour Yellow (Y) Green(y)
    3 Seed Shape Round(R) Wrinkled(r)
    4 Flower Colour Purple (P) White(p)
    5 Flower Position Axial (A) Terminal(a)
    6 Pod Colour Green (G) Yellow(g)
    7 Pod Shape Smooth (S) Constricted(s)
     

Important Points

  • The characters which always appear in two opposing conditions are called contracting characters.
  • Mendel selected seven pairs of contrasting characters of pea plants for his experiments which are as follows:
    • Pea shape: Round or Wrinkled.
    • Pea color: Green or Yellow.
    • Pod shape: Constricted or Inflated.
    • Pod color: Green or Yellow.
    • Flower color: Purple or White.
    • Plant size: Tall or Dwarf.
    • Position of flowers: Axial or Terminal.

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