-571Subchapter IV—Miscellaneous Provisions § 571. Succession by right of representation; posthumous child Inheritance or succession "by right of representation" takes place when the descendants of a deceased person take the same share or right in the estate of another person that the deceased person would have taken as an heir if living. A posthumous child is considered as living at the death of the parent. § 572. Determination of degree of kindred The degree of kindred is established by the number of generations, and each generation is called a degree. § 573. Lineal consanguinity; division Lineal consanguinity, or the direct line of consanguinity, is the relationship between persons one of whom is a descendant of the other. The direct line is divided into a direct line descending, which connects a person with those who descend from him, and a direct line ascending, which connects a person with those from whom he descends. In the direct line there are as many degrees as there are generations. Thus, the child is, with regard to the parent, in the first degree; the grandchild, with regard to the grandparent, in the second; and vice versa as to the parents and grandparents with regard to their respective children and grandchildren. § 574. Collateral consanguinity Collateral consanguinity is the relationship between persons who spring from a common ancestor, but are not m direct line. The degree is established by counting the generations, from one relative up to the common ancestor, and from the common ancestor to the other relative. In the computation the first relative is excluded, the other included, and the ancestor counted but once. Thus, brothers are related in the second degree, uncle and nephew in the third degree, cousins-german in the fourth, and so on. § 575. Inheritance rights of kindred of the half blood Kindred of the half blood inherit equally with those of the whole blood in the same degree, unless the inheritance came to the intestate by descent or gift of one of his ancestors, in which case all those who are not of the blood of the ancestor are excluded from the inheritance in favor of those who are. § 576. Inheritance rights of illegitimate children; limitations An illegitimate child is an heir of the person who, in writing, signed in the presence of a competent witness, acknowledges himself to be the father of the child; and in all cases is an heir of his mother; and inherits his or her estate, in whole or in part, as the case may be, in the same manner as if he had been born in lawful wedlock; but he does not represent his father or mother by inheriting any part of the estate of his or her kindred, either lineal or collateral, unless, before his death, his parents have intermarried, and his father, after the marriage, acknowledges him as his child, or adopts him into his family; m which case the child and all the legitimate children are considered brothers and sisters, and on the death of either of them, intestate, and without issue, the others inherit his estate, and are heirs, as hereinbefore provided, in like manner as if all the children had been legitimate; saving to the father and mother, respectively, their rights in the estates of all the children in like manner as if all had been legitimate. The issue of all marriages null in law, or dissolved by divorce, are legitimate.