A gene is said to be dominant if:

A gene is said to be dominant if:
  1. it expresses its effect only in the homozygous stage
  2. it expresses its effect only under heterozygous condition
  3. it expresses its effect both under homozygous and heterozygous conditions
  4. it never expresses its effect under any condition

Solution

A dominant allele is expressed in homozygous as well as heterozygous condition. A recessive trait is only expressed in the homozygous condition.

Asked in: NEET 2002

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