Question

A gene said to be dominant if : -

• A. It express it's effect only in homozygous stage
• B. It expressed only in heterozygous condition
• C. It expressed both in homozygous and heterozygous condition
• D. It never expressed in any condition

Answer 1

Answer: (C)

It expressed both in homozygous and heterozygous condition

The dominant factor is an allele or Mendelian factor which expresses itself in the hybrid (heterozygous) as well as in the homozygous state. It is denoted by a capital letter (T or D for tallness in pea, R or W for round seeds in pea). A dominant gene in genotype will be expressed even in the presence of a corresponding recessive gene.

So, the correct answer is 'It expressed both in homozygous and heterozygous condition'.