Last Updated
：2025/11/28
pedigree collapse
Noun
uncountable
Japanese Meaning
先祖近親交配により、子孫が持つ固有の先祖数が、世代ごとに倍々に増加するという理論上の数（2のn乗の和）よりも少なくなる現象
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(genealogy) The phenomenon in which ancestral inbreeding causes the number of a descendant’s distinct ancestors to be smaller than that predicted by a binary tree (∑ᵢ₌₁ⁿ 2ⁱ, where n represents the number of generations).
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pedigree collapse
Geneticists studying royal lineages often encounter pedigree collapse, where multiple lines of ancestry merge and reduce the number of distinct forebears.
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Geneticists studying royal lineages often encounter pedigree collapse, where multiple lines of ancestry merge and reduce the number of distinct forebears.
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