Question

The traits which express themselves in F${}_1$ generation are called as

• A. Recessive
• B. Dominant
• C. Both A and B
• D. None of the above

Answer 1

Answer: (B)

Dominant

A trait that fully manifests itself, in heterozygous condition, is referred to as dominant trait and the allele controlling it is known as the dominant allele. The trait that does not express itself in heterozygous condition or whose effect is masked by the presence of dominant trait is known as a recessive trait.

Offspring of the cross of first parent individuals are referred to as first filial generation (F${}_1$). Since, F${}_1$ generation carries both dominant and recessive alleles, it is genotypically heterozygote. Therefore, a trait which is expressed in the first filial generation is referred to as dominant trait and the one which is not expressed is a recessive trait.