Question

a cross between two hybrid purple flower plants (purple and white) produced-
purple flower plants mostly white flower plants mostly purple flower plants all white flower plants all purple flower plants

Explanation:

Step1: Recall Mendelian Genetics

Hybrid purple flower plants (let's assume purple is dominant, genotype \(Pp\) where \(P\) is purple allele, \(p\) is white allele). Crossing two \(Pp\) plants: \(Pp\times Pp\).

Step2: Punnett Square Analysis

The Punnett square for \(Pp\times Pp\) gives genotypes: \(PP\) (purple), \(Pp\) (purple), \(Pp\) (purple), \(pp\) (white). So phenotypic ratio is 3 purple : 1 white. Thus, most offspring are purple.

Answer:

mostly purple flower plants