Question

A pea plant heterozygous for axial flowers is crossed with a pea plant bearing terminal flowers. Predict the phenotypes of the offspring produced as a result of this cross.

• A. All the offspring will produce terminal flowers
• B. Plants producing axial flowers and plants producing terminal flowers are obtained in the ratio of 1 : 1
• C. All the offspring will produce axial flowers
• D. All the offspring produced display dominant phenotype only

Answer 1

The correct option is B Plants producing axial flowers and plants producing terminal flowers are obtained in the ratio of 1 : 1

With respect to flower position, axial flowers are dominant over terminal flowers in pea plants.

The genotype of the plant heterozygous for axial flowers is Aa.

The genotype of the plant bearing terminal flowers is aa.

When these plants are crossed, the resulting progeny will have plants that produce axial flowers and plants that produce terminal flowers in the ratio of 1 : 1