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Inbreeding coefficients of various populations in Europe and Asia. Offspring of biologically related persons are subject to the possible effects of inbreeding, such as congenital birth defects. The chances of such disorders are increased when the biological parents are more closely related.
The European genetic structure today (based on 273,464 SNPs). Three levels of structure as revealed by PC analysis are shown: A) inter-continental; B) intra-continental; and C) inside a single country (Estonia), where median values of the PC1&2 are shown. D) European map illustrating the origin of sample and population size.
In genealogy, pedigree collapse describes how reproduction between two individuals who share an ancestor causes the number of distinct ancestors in the family tree of their offspring to be smaller than it could otherwise be. Robert C. Gunderson coined the term; synonyms include implex and the German Ahnenschwund ("loss of ancestors"). [1]
The presence of haemophilia B within the European royal families was well-known, with the condition once popularly known as "the royal disease". The sex-linked X chromosome bleeding disorder manifests almost exclusively in males, even though the genetic mutation causing the disorder is located on the X chromosome and can be inherited from the ...
The genetic history of Italy includes information around the formation, ethnogenesis, and other DNA-specific information about the inhabitants of Italy. Modern Italians mainly descend from the ancient peoples of Italy, including Indo-European speakers (Romans and other Latins, Falisci, Picentes, Umbrians, Samnites, Oscans, Sicels, Elymians, Messapians and Adriatic Veneti, as well as Magno ...
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