Heredity and Evolution
An allele is said to be recessive, when it is expressed in
- Heterozygous condition only
- Homozygous condition only
- Both homozygous and heterozygous conditions.
Correct Answer: Option(b)
An allele is said to be recessive only when it is expressed in Homozygous condition because when any dominant allele is present the phenotype will be dominant.
Therefore, the option (B) is correct.