ID# 1977:
"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] 7 to the somatic character, I have represented in two columns of Table II, the extent to which the dominant character is present in the ancestry, and in the accompanying table one sees the effect on the offspring: [tabular] [underscore]No. of grandparents with Dominant character & Percentage of offspring with Dominant character[end underscore] 4 & 89 3 & 78 2 & 59 1 & 33 0 & 0 [end tabular material] It will thus be obvious that our judging solely by the patent or somatic character of the grandparentage, there is a very marked influence of the ancestry on the heritage; that even if we select ancestry by somatic character only, we should expect an influence on the offspring amounting to 0 to 90 p.c. in intensity according to the nature of the selection. I think accordingly that to deny the influence of ancestry - at any rate that influence in the sense in which the biometrician uses the term - is to deny [end]

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