What are the conditions for observing Mendel’s third law?

The following conditions are needed: an alternative manifestation of signs in each pair; homozygosity of the initial forms (parental individuals); the equal likelihood of formation of gametes with different alleles in the hybrid; the same viability of different gametes; sufficient number of individuals in the second generation to obtain reliable results; the random nature of the combination of gametes during fertilization; the same viability of zygotes with different combinations of genes; independence of the manifestation of characters from external conditions and from the rest of the genes of the genotype as a whole.

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