The phenotypic ratio is 100 short tailed mice.

F1 generation genotype. The recessive alleles segregate during gamete formation. The f1 generation contains characteristics of both parents with a distinctly unique genotype and a uniform phenotype. The f1 generation refers to the first filial generation.

F1 generation in other terms is referred to as a first filial generation offspring resulted by parental types that are distinctly different to each other. All the plants in f1 generation will be tall and will have same genotypes ie. The plants in f2 generation will be tall and dwarf in the ration of 31.

As we can see from the cross all of the offspring of the f1 generation will have the genotype ss short tail and ss short tail. Filial generations are the nomenclature given to subsequent sets of offspring from controlled or observed reproduction. Plants of f1 generation are allowed to interbreed freely among themselves to get f2 generation.

Basically the parents used in a dihybrid cross are identical hybrid for two traits. All plants will be heterozygous tall. But all tall plants are not similar genotypically.

However its phenotype shows dominant phenotypes of both traits. Since all of the. Also the genotype of the f1 generation is heterozygous for both traits.

The f in f1 stands for filial so in short f1 means first filial generation. In modern day genetics f1 hybrids are utilized at a higher scale. All f1 hybrid plants have the genotype ss and all are spherical dominant characteristic.

The first set of offspring from these parents is then known as the f1 generation. The f1 generation is the first filial generation of the dihybrid cross. In basic terminology the f1 generation is the first generation of offspring produced by a set of parents.