gamete cells

Determine the natural relationship between Mendelian theory is based on the separation law. According to this law, in the gamete cells, a pair of alleles from each other, respectively, into their cell gametes. Sperm and egg fertilized formed offspring, the two children from a group of mothers, a father from there on the same allele is one from the mother and one from the father. If the results of identification in conformity with the law, not rule out the natural, if not match, then rule out the natural (except variation). In most cases, mother, son relationship is known to identify whether the assumption that natural father and child relationship. First, from the time the mother, son of the genotype in comparison, the genes may determine the child from his father's genes (gene father, OG). And then observe the assumption that the father's genotype, if the gene does not have a father who can rule out the assumption that the natural parent and child relationship. If the assumption that the father also has a father who genes, the results can not be ruled out on the assumption that the natural father, a hypothetical case of the mother is FGA-22/23 type, for 22/25 of children, from a comparative gene can determine paternity is FGA-25. Father of a hypothetical case for FGA-22/24; assumption that the father of 2 to 24/25. On the assumption that the father did not have a father of 25, so he can rule out the natural relationship with their children compared to the assumption that the father of two because of FGA-25, did not rule out a natural relationship with their children.