BEcause cross pollinating
parental generation
potatoe
True-breeding pea plants always produce offspring with the same traits as the parent plant. This is because they are homozygous for the trait of interest, resulting in consistent expression in the offspring generation.
Three times as many shorts plants as tall plants.
all offspring in every generation will have the same characteristics of parent plants
parental generationparental generation
parental generation
The original generation for pea plants in Mendel's experiment is called the P generation, or parental generation. This generation consisted of the true-breeding plants that Mendel used to establish the traits he studied. The P generation was crossed to produce the F1 generation, which exhibited the traits inherited from the P generation.
He needed a pure generation of plants to ensure that there were no recessive factors when he conducted his experiments on heredity.
If Gregor Mendel did not use plants that were not true breeding, he would not have discovered heredity because there would not be any evidence that traits passed on to the next generation and that the offspring retained the traits of the parents.
parental generationparental generation
Mendel crossed true-breeding pea plants with contrasting traits in his first generation experiments. Specifically, he crossed a true-breeding purple-flowered plant with a true-breeding white-flowered plant.
TT x tt
Mendel produced true-breeding strains of pea plants through the process of self-fertilization, where he allowed plants to pollinate themselves. This ensured that the offspring inherited identical traits to the parents. Mendel then used these true-breeding strains to conduct his experiments on inheritance.
Tt and TT were the genotypes of the true breeding plants that Mendel used in his two factor cross.
When Mendel crossed true-breeding pea plants with different traits, he observed that the offspring in the first generation (F1) all displayed one of the parental traits. This led him to propose the Law of Dominance, which states that one trait will mask or dominate another in hybrids.
True breeding tall plants would be TT and true breeding short plants would be tt, so TT x tt would illustrate the crossbreeding.