Question

The recessive gene is one that expresses itself in

• A. Heterozygous condition
• B. Homozygous condition
• C. $F_2$ generation
• D. $Y$-linked inheritance

Answer 1

Answer: (B)

Homozygous condition

According to Mendles law of inheritance, the dominant factor can express itself completely and suppresses the other's traits. The heterozygous condition carries both dominant and recessive alleles, the presence of dominant allele masks the expression of the recessive allele. So, recessive alleles can be expressed only in homozygous conditions of any generation. The correct answer is B.