One of the major criticisms against ‘Mendelian laws is that they do not recognize that

One of the major criticisms against Mendelian laws is that they do not recognize that one trait is often controlled by many pairs of genes. This means that a single trait can be influenced by multiple genes, rather than just one pair of genes as suggested by Mendelian laws. This is known as polygenic inheritance, and it can result in a wide range of possible phenotypes. In some cases, the expression of a trait may also be influenced by environmental factors, further complicating the relationship between genotype and phenotype.