P(purple) and p (white) are the dominant and recessive alleles for flower color in peas. similarly, a (axial) and a (terminal) are the dominant and recessive alleles for flower position in peas. two plants with the genotype ppaa are crossed. which genotype is indicative of white axial flowers?

so you do the gene chart,

         P       p

A    PA     Ap

a    Pa      ap

So "ap" would make it white but not axial.  "Ap" is white and axial. That is your flower. :) hope I helped.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.