Class 12 Biology Inheritance Variation LAW OF DOMINANCE

LAW OF DOMINANCE

The dominant allele masks the effect of recessive allele. It explains the expression of only one of the parental characters in a monohybrid cross in F1 and expression of both in F2.

  • Characters are controlled by discrete units called factors.
  • In a dissimilar pair of factors one member of pair dominate the other. For example: allele of tallness (T) is dominant over allele of dwarf (t).

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