ID# 1974:
 "Theory of Ancestral Contributions in Heredity," handwritten manuscript by Karl Pearson, published in Proceedings of the Royal Society (vol. 81:547)
Date:
1909
Pages: (1|2|3|4|5|6|7|8|9|10|11|12)
Source:
 University College London, KP, 198
&quote;Theory of Ancestral Contributions in Heredity,&quote; handwritten manuscript by Karl Pearson, published in Proceedings of the Royal Society (vol. 81:547)

[handwritten] 4 15 types of grandparentage. This is exhibited in Table II. If Mr. Darlishire's principle that ancestry is of no importance were correct, then the differences in type of these grandparents would not be of any significance. [tabular material] Table I Parents & Offspring & & DD & DR & RR DD, DD & 1 & -- & -- DD, DR & 2 & 2 & -- DD, RR, & -- & 2 & -- DR, DR, & 1 & 2 & 1 DR, RR, & -- & 2 & 2 RR, RR, & -- & -- & 1 [end tabular material] Now Table II may be examined from several standpoints. We may first consider the gametic contributions of the grandparents and of the offspring. Thus we have: [tabular material] [underscore] No. of DD's in grandparentage & Percentage of DD's in offspring[end underscore] 4 & 100 3 & 67 2 & 41 1 & 22 0 & 11 [end tabular material] In other words the constitution of the grandparentage sub- [end]

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