Question

A plant can produce either purple flowers or white flowers. What is the probability of purple-flowered offspring if two plants that are heterozygous for purple flowers are crossed?

Answer 1

hope this might help u...
ratio of purple flowers to white flowers in heterozygous parent crossing is 3:1
hence heterozygous purple flowers are 50%

Answer 2

Answer:

The probability of having purple-flowered offsprings is 75%.

Explanation:

Purple color of flower is the dominant trait here, so it will be represented with P and white flower color will be p.

So heterozygous genotype of purple flower plant will be represented with the alleles Pp.

So when two heterozygous plants are crossed, according to Mendel's law of seggregation, the genotype of the offsprrings will be PP, Pp,Pp,pp.

Thus the phenotypic ratio of purple-flowered to white-flowered offspring will be 3:1. Hence 75% offsprings will be purple.

The detailed cross is given below.