According to the statement that "dissimilar pair of factors which remain together without blending in F₁ hybrid would separate like particles during gamete formation, and as a result, each gamete receives only one factor," which genetic law does this describe?

Though the parents contain two alleles during gamete formation, the factors or alleles of a pair segregate from each other such that a gamete receives only one of the two factors. a heterozygous parent with two dissimilar alleles   produces two kinds of gametes each having one allele with equal proportion.