In pea plants, purple flowers (p) are dominant over white flowers (p) and tall stems (t) are dominant over short stems (t). complete a dihybrid cross for parents with the genotypes: pptt × pptt and answer the following in complete sentences. 1) describe how you would set up a punnett square for this cross. 2) list the likelihood of each possible offspring genotype. 3)list the likelihood of each possible offspring phenotype.