Mendel's second law or Law of independent segregation of characters
When two heterozygous individuals of the first generation (F1) are crossed with each other, recessive traits that did not appear in F1 reappear in F2 in a ratio of 3:1.
With these data, Mendel deduced that each trait or character was determined by two factors, each transmitted by one of the parents who, previously, randomly separated their two pieces of information. He thus proposed the 2nd law called the segregation or disjunction of antagonistic factors or characters and their random combination between descendants.