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cs-142:printing-pedigrees [2015/05/28 19:19]
cs142ta [Part 3]
cs-142:printing-pedigrees [2015/05/28 19:22] (current)
cs142ta [Part 3]
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 ===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:
 <pre> <pre>
cs-142/printing-pedigrees.txt · Last modified: 2015/05/28 19:22 by cs142ta
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