biology·NCERT Class 12·Principles of Inheritance & Variation
Genetics: Punnett & Inheritance
Medium+90 XP🧫
Mendel crossed tall peas with dwarf peas and got 3 tall : 1 dwarf in F₂. Why? Build the Punnett square in 3D and make the prediction before seeing the answer.
›Monohybrid cross (Tt × Tt): 1TT : 2Tt : 1tt (genotype); 3 tall : 1 dwarf (phenotype).
›Dihybrid cross (AaBb × AaBb): 9:3:3:1 phenotype ratio.