What is the essence of the law of independent inheritance of traits?

The law of independent inheritance – each pair of traits is inherited independently of other pairs. Therefore, a 3: 1 split occurs for each pair. When two homozygous individuals are crossed, if they differ in several pairs of traits, the genes (respectively, their inherent traits) are transmitted to the next generation independently of each other, and are also combined in various combinations. When plants that differed in several traits were crossed, the inheritance of each trait adhered to the first two Mendel’s laws, and in the offspring the traits were combined in such a way as if their inheritance occurred independently. The first generation after crossing had a dominant phenotype. And in the second generation, a splitting of phenotypes was observed in a ratio of 9: 3: 3: 1.