To try to explain this data, you come up with two alternate hypotheses

I have no idea what you're asking here. Here's something I found online. Maybe you can work with it.

Hypothesis 1: The alleles for flower color and petal shape are found on different chromosomes. (This is independent assortment as observed by Mendel with the characters of seed color and shape.)

Hypothesis 2: The alleles for flower color and petal shape are found on different chromosomes, but the blue-rounded (B_pp) and purple-pointy (bbP_) phenotypes typically do not survive, for a reason that has yet to be determined.

Hypothesis 3: The alleles for flower color and petal shape are found close to each other on the same chromosome.