contributed by two parents is blended together to produce an offspring. You politely disagree and inform them that you support Mendel's particulate mechanism of inheritance instead. This hypothesis is best supported by which of the following outcomes of Mendel's monohybrid cross? All heterozygous plants in the F 1 generation were purple, suggesting that hybrids are the cross between two true breeding lines. The flowers in the P generation were true breeding, meaning that these individuals always produced offspring expressing a particular parental trait (purple or white). The alleles for white flower color were inherited independently of the alleles for purple flower color, producing four unique trait combinations in the F 2 generation. White flowers, the recessive phenotype, were recovered in the F2 generation. This suggests that the allele for white flowers retained its identity during transmission from parent to offspring.