Question

Recessive gene can express itself only in________.

• A. homozygous condition
• B. heterozygous condition
• C. homo-hetrozygous condition
• D. ominizygous

Answer 1

The correct option is A homozygous condition

Recessive alleles are those who cannot express themselves in the presence of a dominant allele. So in heterozygous (e.g.Aa or Tt) condition, recessive alleles fail to express themselves. The only condition where they can express is a homozygous-recessive condition (e.g. aa or tt).