Question

in certain species of plants, purple flowers (p) are dominant to white flowers (p). if two heterozygous plants are crossed, what will be the phenotype of the offspring?
100% purple flowers
100% white flowers
75% white flowers, 25% purple flowers
25% white flowers, 75% purple flowers

Explanation:

Step1: Determine parent genotypes

Heterozygous plants have genotype Pp.

Step2: Set up Punnett - square

	P	p
p	Pp	pp

Step3: Analyze phenotypes

PP and Pp result in purple flowers, pp in white flowers. There are 3 purple - flower genotypes (PP, Pp, Pp) and 1 white - flower genotype (pp) out of 4 total genotypes. So the ratio is 75% purple and 25% white.

Answer:

E. 25% white flowers, 75% purple flowers