You perform a dihybrid cross with a rose plant that has Dark Red Flowers and Short Thorns and one that has White Flowers and Long thorns. You expect to get a Mendelian 9:3:3:1 phenotypic ratio from this cross. However, you find this not to be the case. Provide 5 potential reasons why you may not get the Mendelian 9:3:3:1 ratio, assuming you are dealing with two alleles at each of two loci that assort independently (i.e., unlinked). Provide explanations for each reason and potential phenotypes that would fit this explanation.