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Inbreeding is also used to reveal deleterious recessive alleles, which can then be eliminated through assortative breeding or through culling. In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the effects of heterosis. Inbreeding in plants also occurs naturally in the form of self-pollination.
Without pedigree collapse, a person's ancestor tree is a binary tree, formed by the person, the parents (2), the grandparents (4), great-grandparents (8), and so on.. However, the number of individuals in such a tree grows exponentially and will eventually become impossibl
The first known instances of "hillbilly" in print were in The Railroad Trainmen's Journal (vol. ix, July 1892), [2] an 1899 photograph of men and women in West Virginia labeled "Camp Hillbilly", [3] and a 1900 New York Journal article containing the definition: "a Hill-Billie is a free and untrammeled white citizen of Alabama, who lives in the ...
The Habsburg Philip II of Spain and his wife, the Tudor Mary I of England.Mary and Philip were first cousins once removed. The wedding of Nicholas II of Russia and Alix of Hesse (whose name was changed to Alexandra Feodorovna in the process), second cousins through their shared great-grandparents Louis II, Grand Duke of Hesse, and Wilhelmine of Baden
Most of the Castilian nobility disliked Maria Anna and her German courtiers and viewed a French candidate as more likely to ensure their independence. In September 1700, Charles became ill again; by 28 September he was no longer able to eat, and Luis Manuel Fernández de Portocarrero persuaded him to alter his will in favour of Louis XIV's ...
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. A coefficient of inbreeding can be calculated for an individual, and is typically one-half the coefficient of relationship between ...
Wright introduced the inbreeding coefficient F as the correlation between uniting gametes in 1922, and most of the subsequent theory of inbreeding has been developed from his work. The definition of the inbreeding coefficient now most widely used is mathematically equivalent to that of Wright. [7]
Inbreeding avoidance – Evolutionary biology concept of prevention of negative inbreeding effects; Inbreeding depression – Reduced fitness as a result of inbreeding; Incest – Sexual activity between immediate family members or people considered too closely related to marry; Incest taboo – Cultural rule that prohibits incest