In the civil system, kinship degrees are simply calculated by adding the number of links from one of the relatives in question, Ego, to the common ancestor, and those that connect the ancestor to the other relative, Alter.
Civil degree is calculated by counting the links from Ego to a nearest
common ancestor and then continuing to count down the generations to Alter.
In this case
The following pattern of assigning degree results.
The civil system has an important advantage insofar as it is equivalent to a genetic measure, the inbreeding coefficient, which predicts the probabilities that each of two intermarring relatives will pass on the an allele (variant form of a gene) inherited from a common ancestor to one of their children, making him/her homozygous for the trait.