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Related to consanguinity: amorousness, demureness, Consanguinity table


consanguinity (kŏnˌsăng-gwĭnˈĭtē), state of being related by blood or descended from a common ancestor. This article focuses on legal usage of the term as it relates to the laws of marriage, descent, and inheritance; for its broader anthropological implications, see incest. Consanguinity is to be distinguished from affinity, which is the relation of a person, through marriage, to the consanguineous relatives of a spouse. Marriage between persons in lineal consanguinity (persons in the direct line of descent, such as father and daughter) and between brothers and sisters is void under common law, church law, and statute. Whether or not marriages between persons of collateral consanguinity (those having a common ancestor but not related in direct line of descent) are prohibited as incestuous depends on statutory provision and judicial interpretation. In more than half the states of the United States, marriage between first cousins is prohibited by law, and the Roman Catholic Church and the Orthodox Eastern Church have strict rules on consanguinity as an impediment to marriage. Statutes in the United States discard affinal relationship as an impediment to marriage. Whether incestuous marriages are void or voidable in the United States depends on local statutes and their interpretation. In the law of descent and inheritance, the concept of consanguinity is most important in the area of intestate succession. Most states award the spouse of a person who dies intestate a certain share of the estate, even though there exists neither lineal nor collateral consanguinity between the spouses.


See B. D. Inglis, Family Law (2d ed., 2 vol., 1968–70).

The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.


(ANTHROPOLOGY) a kinship term expressing the relationship of DESCENT from a common ancestor. The tie is therefore based on biological facts as opposed to cultural facts (i.e. parental or sibling ties, not spouses). In theory, this opposes it to affinal relationships based on marriage, but ‘facts’ can rarely be classified so clearly. Adoption and fictive kinship constructions complicate the distinction in many societies. COGNATIC is an alternative term for consanguine.
Collins Dictionary of Sociology, 3rd ed. © HarperCollins Publishers 2000
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



in law, a blood relationship between people. The law links the existence, change, and cessation of rights and duties to consanguinity.

In the USSR both lineal consanguinity (for example, father-son or grandmother-granddaughter) and collateral consanguinity, where the relationships arise owing to a common forebear (for example, brother-sister or uncle-nephew), are of legal significance. Lineal consanguinity may be ascending (from the descendants to the forebears) or descending (from the forebears to the descendants). Brothers and sisters are of the whole blood if they have the same mother and father, and they are half blood if they have either the same mother (uterine siblings) or the same father (consanguinean siblings). The distinction, however, does not affect the legal relations between brothers and sisters; for example, a brother and sister may not marry regardless of whether the kinship is whole blood or half blood.

Consanguinity is expressed in degrees indicating the closeness of the blood ties between relatives. Parents and children are in the first degree, brothers and sisters in the second degree, and so on. Relations between a parent and an adopted child are legally consanguineal. The relationships between spouses are not consanguineal.

In every instance the law defines the group of persons among whom consanguinity may have legal significance. The concept of consanguinity is applied most extensively in family law. In civil law, consanguineal relationships are the basis for settling inheritance questions, and in labor law, the granting of pensions upon the loss of a breadwinner depends on consanguinity. In addition, the law prohibits closely related persons from working together in the same organization if one relative is directly subordinate or responsible to the other.

In bourgeois law consanguineal relationships are regulated primarily by inheritance law.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


Genetic blood relationship arising from a common ancestor.
The genetic relationship between igneous rocks in a single petrographic province which are presumably derived from a common parent magma.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Among the cases, 109(73%) had consanguinity compared to 89(60%) in the controls.
.a person who is the spouse of an incumbent elective official or a relative within the second civil degree of consanguinity or affinity of an incumbent elective official holds or or runs for an elective office simultaneously with the incumbent elective official within the same province, or occupies the same office immediately after the term of office of the incumbent elective official.
This information includes nature of ailment, physical features, clinical picture, parental age, consanguinity, pregnancy history and family history of the patients.
Based on history, clinical examination and normal biochemical findings, PLS was diagnosed in our patients and consanguinity was considered to be a risk factor.
We searched for all articles from MEDLINE, PUBMED (January 1958 - December 2017) using the Medical Subject Headings (MeSH) terms "Congenital defects, congenital malformations" and "consanguinity" limited to the English language, which yielded more than 100 articles.
family one can speak of consanguinity given that the two spouses S.V.
Consanguinity not only severely increases the prevalence of inherited blood disorders such as thalassaemia, haemophilia and sickle cell disorders, rare congenital conditions like Harlequin-type skin disease, but also severe recessive disorders such as Tay-Sachs, cystic fibrosis, congenital heart defects, diabetes, spinal muscular atrophy, albinism, hearing impairment, epilepsy, schizophrenia, physical and intellectual disabilities, and other neuro-degenerative conditions.
"While lifestyle and eating habits are two critical factors that have led to an increase in infertility with the local age group between age 20 and 30, consanguinity is another very important reason for the increase in such cases among the Emirati population," said Professor Dr Human Fatemi, subspecialist, Reproductive Medicine and Reproductive Surgery, and medical director of IVI Middle East Fertility Clinic.
She is mainly involved in research on human genetic disorders, genetic diversity in North Africa and the impact of consanguinity on health.
These are the higher prevalence of Consanguinity (marrying of first- or second-degree cousins), Vitamin D deficiency and Obesity.
The gestational age and weight, family history of eye diseases, consanguinity, any accompanying neurological diseases, and presence of other sensory disabilities such as deafness and speech disability were recorded.