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Issue typically means a person's lineal descendants—all genetic descendants of a person, regardless of degree. [1] Issue is a narrower category than heirs, which includes spouses, and collaterals (siblings, cousins, aunts, and uncles). [2] This meaning of issue arises most often in wills and trusts. [3]
The Jukes family was a New York "hill family" studied in the late 19th and early 20th centuries. The studies are part of a series of other family studies, including the Kallikaks, the Zeros and the Nams, that were often quoted as arguments in support of eugenics, though the original Jukes study, by Richard L. Dugdale, placed considerable emphasis on the environment as a determining factor in ...
In some ancestry charts, an individual appears on the left and his or her ancestors appear to the right. Conversely, a descendant chart, which depicts all the descendants of an individual, will be narrowest at the top. Beyond these formats, some family trees might include all members of a particular surname (e.g., male-line descendants).
Transgenerational trauma is the psychological and physiological effects that the trauma experienced by people has on subsequent generations in that group. The primary mode of transmission is the shared family environment of the infant causing psychological, behavioral and social changes in the individual.
In the narrow sense, a "genealogy" or a "family tree" traces the descendants of one person, whereas a "family history" traces the ancestors of one person, [4] [5] [6] but the terms are often used interchangeably. [7] A family history may include additional biographical information, family traditions, and the like. [3]
Matrilineality is the tracing of kinship through the female line. It may also correlate with a social system in which each person is identified with their matriline, their mother's lineage, and which can involve the inheritance of property and titles.
Common descent is a concept in evolutionary biology applicable when one species is the ancestor of two or more species later in time. According to modern evolutionary biology, all living beings could be descendants of a unique ancestor commonly referred to as the last universal common ancestor (LUCA) of all life on Earth.
The coefficient of relationship is a measure of the degree of consanguinity (or biological relationship) between two individuals. The term coefficient of relationship was defined by Sewall Wright in 1922, and was derived from his definition of the coefficient of inbreeding of 1921.