Question

The allele which gets expressed in both homozygous and heterozygous condition is known as the ____________ allele.

• A. recessive
• B. dominant
• C. dependent
• D. both b and c

Answer 1

The correct option is B dominant

Characters are controlled by genes and alleles are alternative forms of a particular gene. Generally, a gene has two alleles for a particular character, one dominant allele and one recessive allele.

If both the alleles are similar, then the condition is called homozygous and when both the alleles are dissimilar, then the condition is called heterozygous.

Dominant allele is expressed both in homozygous and heterozygous condition whereas recessive allele is expressed only in homozygous condition.

Mendel called genes as factors and postulated that factors occur in pairs.