1. if a true-breeding white flowered plant is bred with a true-breeding purple flowered plant, what are the genotypes of the offspring? a. heterozygous b. homozygous dominant and heterozygous c. heterozygous dominant d. homozygous dominant and homozygous recessive e. homozygous dominant, heterozygous, and homozygous recessive 2. given what we know about mendelian genetics, what is the genotype of pea plants with white flowers? white is a recessive trait while purple is a dominant trait. a. heterozygous b. w c. homozygous recessive d. hemizygous recessive e. pw 3. coat color for a breed of cattle is determined by two co-dominant alleles, one for white (w) and one for red (r). a heterozygote will be a mixed color, called roan. crossing two roans produces an equal number of white or red offspring and twice as many roans. if a farmer wanted a herd of cattle that were all roans, what color should the two parents be? a. roan and roan. b. roan and white. c. roan and red. d. white and red. e. red and red.