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Pedigree construction is a family history, and details about an earlier generation may be uncertain as memories fade. If the sex of the person is unknown a diamond is used. Someone with the phenotype in question is represented by a filled-in (darker) symbol.
Family tree showing the relationship of each person to the orange person, including cousins and gene share. A family tree, also called a genealogy or a pedigree chart, is a chart representing family relationships in a conventional tree structure. More detailed family trees, used in medicine and social work, are known as genograms .
Proband. In medical genetics and other medical fields, a proband, proposito (male proband), or proposita (female proband) [1] is a particular subject (human or other animal) being studied or reported on. [2] On pedigrees, the proband is noted with a square (male) or circle (female) shaded accordingly. Denoting the proband is important, so the ...
An individual is said to be inbred if there is a loop in its pedigree chart. A loop is defined as a path that runs from an individual up to the common ancestor through one parent and back down to the other parent, without going through any individual twice. The number of loops is always the number of common ancestors the parents have.
A gender symbol is a pictogram or glyph used to represent sex and gender, for example in biology and medicine, in genealogy, or in the sociological fields of gender politics, LGBT subculture and identity politics . In his books Mantissa Plantarum (1767) and Mantissa Plantarum Altera (1771), Carl Linnaeus regularly used the planetary symbols of ...
pedigree 1. The known and documented lineage of an animal. [1]: 160 2. The written pedigree chart outlining the lineage of an animal. performance class A category of horse show classes where horses are exhibited in harness or under saddle and judging is based on how they perform the tasks asked of them.
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. The measure is most commonly used in genetics and genealogy.
Genealogy. The family tree of Louis III, Duke of Württemberg (ruled 1568–1593) The family tree of "the Landas", a 17th-century family [1] Genealogy (from Ancient Greek γενεαλογία (genealogía) 'the making of a pedigree') [2] is the study of families, family history, and the tracing of their lineages. Genealogists use oral ...