Question

workout a cross if a pea plant with violet flowers is crossed with another pea plant with white flower. mention the ratio and type of cross

Answer 1

Answer:

monohybrid cross - one pair characters

ratio - phenotype - 3:1 as there will be 3 violet and 1 white flower.

Answer 2

The cross is a monohybrid cross.

Homozygous case: All the flowers produced will be violet.

Heterozygous case: Genotypic/Phenotypic ratio: 1:1

Let the pea plant with violet flower be VV/Vv and the pea plant with white flowers be vv.

[ In case of pea plants, violet flowers are dominant over white flowers]

Case I:

Parent generation: VV × vv

F1 generation: Vv, Vv, Vv, Vv

So all the offsprings are heterozygous violet flowers.

Case 2:

Parent generation: Vv × vv

F1 generation: Vv, Vv, vv, vv

Genotypic ratio: 1:1

Phenotypic ratio: 1:1

So 50℅ chance of getting violet flowers and 50℅ chance of getting white flowers out of this cross.