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 cs-142:printing-pedigrees [2015/05/28 13:19]cs142ta [Part 3] cs-142:printing-pedigrees [2015/05/28 13:22] (current)cs142ta [Part 3] Both sides previous revision Previous revision 2015/05/28 13:22 cs142ta [Part 3] 2015/05/28 13:19 cs142ta [Part 3] 2015/05/28 13:15 cs142ta [Part 3] 2015/05/28 13:14 cs142ta [Problem] 2015/05/28 13:14 cs142ta [Problem] 2015/05/28 13:10 cs142ta 2015/05/28 13:09 cs142ta created 2015/05/28 13:22 cs142ta [Part 3] 2015/05/28 13:19 cs142ta [Part 3] 2015/05/28 13:15 cs142ta [Part 3] 2015/05/28 13:14 cs142ta [Problem] 2015/05/28 13:14 cs142ta [Problem] 2015/05/28 13:10 cs142ta 2015/05/28 13:09 cs142ta created Line 31: Line 31: ===Part 3=== ===Part 3=== - * Real pedigrees don’t label by generation, but by a genealogical numbering system called [[http://​en.wikipedia.org/​wiki/​Ahnentafel | Ahnentafel numbers]] (see below). + * Real pedigrees don’t label by generation, but by a genealogical numbering system called [[http://​en.wikipedia.org/​wiki/​Ahnentafel | Ahnentafel numbers]] (the number means more than you might think). * “a father'​s number will be twice that individual'​s number, or a mother'​s will be twice plus one” * “a father'​s number will be twice that individual'​s number, or a mother'​s will be twice plus one” - * Ahnentafel numbers are convenient for several reasons: - ** Log base 2 and round down gives generation - ** Evens are male and odds are female - ** The number in binary represents the path through the tree to get to the individual ​ - *** e.g., position 13 in binary is (1)101 (the first one is essentially ignored) and means mother'​s father'​s mother * For example: * For example: