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All About History Books
The Chronicle of Abbot Ralph of Coggeshall describes the reigns of Kings Henry II, Richard I, John and Henry III, providing a wealth of information about their lives and the events of the time. Ralph's work is detailed, comprehensive and objective. We have augmented Ralph's text with extracts from other contemporary chroniclers to enrich the reader's experience. Available at Amazon in eBook and Paperback.
Coefficient of Inbreeding is in General Things.
Coefficient of Inbreeding describes the probability that an individual will have homozygous genes ie the gene will have the same two alleles. For each generation the probability reduces by a factor of four:
25%: a child of siblings, or father and daughter, or mother and son.
12.5%: a child of half-siblings, or double first cousins, or uncle and niece, or aunt and nephew
6.25%: a child of first cousins.
1.5625%: a child of second cousins.