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NEETZoologyPrinciples of Inheritance and Variation

What are the possible pairs of alleles for height in plants?

Options

  1. ATT, Tt, or tt
  2. BTt, tt, or tt
  3. CTT, Tt, or TT
  4. DTt, TT, or Tt

Correct answer

A. TT, Tt, or tt

Step-by-step solution

If we use alphabetical symbols for each gene, then the capital letter is used for the trait expressed at the F1 stage and the small alphabet for the other trait. For example, in case of the character of height, T is used for the Tall trait and t for the ‘dwarf’, and T and t are alleles of each other. Hence, in plants the pair of alleles for height would be TT, Tt or tt . Mendel also proposed that in a true breeding, tall or dwarf pea variety the allelic pair of genes for height are identical or homozygous, TT and t

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