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A genogram, also known as a family diagram, [1] [2] is a pictorial display of a person's position in their family's hereditary and ongoing relationships. It goes beyond a traditional family tree by allowing the user to visualize social patterns and psychological factors that punctuate relationships, especially patterns that repeat over the generations.
Each generation is identified by a Roman numeral (I, II, III, and so on), and each individual within the same generation is identified by an Arabic numeral (1, 2, 3, and so on). Analysis of the pedigree using the principles of Mendelian inheritance can determine whether a trait has a dominant or recessive pattern of inheritance. Pedigrees are ...
His original idea stemmed from his father's request to design a genogram during his training as a family counselor. The first version 1.00, was named "Generations". This version was a little portable 32-bit freeware version of only 202kB working on windows. With all the useful information and ability to edit very simply a generation tree of ...
Three generations of ancestors (born from 1824 to 1916) [1] placed on a Swedish kurbits tree Genealogical data can be represented in several formats, for example, as a pedigree or ancestry chart . Family trees are often presented with the oldest generations at the top of the tree and the younger generations at the bottom.
The first Ahnentafel, published by Michaël Eytzinger in Thesaurus principum hac aetate in Europa viventium Cologne: 1590, pp. 146-147, in which Eytzinger first illustrates his new functional theory of numeration of ancestors; this schema showing Henry III of France as n° 1, de cujus, with his ancestors in five generations.
[3] The record of genealogical work may be presented as a "genealogy", a "family history", or a "family tree". 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]
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The subject (or proband) of the ahnentafel is listed as No. 1, the subject's father as No. 2 and the mother as No. 3, the paternal grandparents as No. 4 and No. 5 and the maternal grandparents as No. 6 and No. 7, and so on, back through the generations. Apart from No. 1, who can be male or female, all even-numbered persons are male, and all odd ...