This law explains how during meiosis cell division (gamete creation), the pair of alleles segregate from one another, resulting in each gamete having only one allele.
Mendel's segregation legislation is universally acknowledged, with no exceptions.
When a pair of alleles is heterozygous, one is dominant and the other recessive, the dominant one is expressed.
Recessive features are more likely to reoccur in the next generation.
There is no other model that indicates that alleles mix up in progeny, hence it is accepted and relevant.