这个词是什么意思？
The change in gene frequency in a population due to migration of gametes or individuals (ANIMAL MIGRATION) across population barriers. In contrast, in GENETIC DRIFT the cause of gene frequency changes are not a result of population or gamete movement.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D051456 · MeSH 2026。
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