Pure lineage theory
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A theory of genetics proposed by the Danish physicist Johansen in 1903. It states that if a population is a mixture of several pure lines, selection can direct mutations in a certain direction, but once the population is pure, selection is ineffective and only mutations due to environmental influences remain. It has had a major impact on modern genetics. Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information |
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〘名〙 一九〇三年デンマークのヨハンセンが提唱した遺伝学上の説。集団が数種の純系の混合であれば、選択で変異を一定方向へ向けられるが、純系になってしまうと選択は無効で、環境の影響による変異しか残らないとする。近代遺伝学に大きな影響を与えた。
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>>: Pure line - Junkei (English spelling)
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