Question

Recessive mutation are expressed normally

• A. Has to express always since it is a mutation
• B. In heterozygous condition
• C. Neither in homozygous nor in heterozygous condition
• D. In homozygous condition

Answer 1

Answer: (D)

In homozygous condition

In recessive mutation, both the alleles must be mutant in order for the mutant phenotype to be observed and expressed only in homozygous condition. If the mutation is expressed in heterozygous condition, it is called as a dominant mutation. In the dominant mutation, the individual carries one mutant and one normal allele. Thus, option D is correct.