这个词是什么意思？
The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011110 · MeSH 2026。
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