Test CrossTall (dominant phenotype) plants of the F1 generation will have one of the following genotypes: DD or DdTest CrossBy crossing to a homozygous recessive individual, the genotype of an unknown individual will be revealed in the offspring. Test CrossIf the tall plant of unknown genotype ...
As in a dihybrid cross, the F1 generation plants produced from a monohybrid cross are heterozygous and only the dominant phenotype is observed. The phenotypic ratio of the resulting F2 generation is 3:1. About 3/4 exhibit the dominant phenotype and 1/4 exhibit the recessive phenotype....
Organisms in this initial cross are called the parental, or P generation. The offspring of the RRYY x rryy cross, which is called the F1 generation, were all heterozygous plants with round, yellow seeds and the genotype RrYy. Next, Mendel crossed two plants from the F1 generation. This...