Any heritable trait possessed by an organism which AIDS survival or reproduction is an adaptation.
有机体所具有的有助于生存和生殖的任何可遗传特征都是适应。
If identical twins are more similar than fraternal twins, this means genes affect the trait, ie it is heritable.
如果同卵双生比异卵双生更相似，这就意味着基因影响了性状，例如遗传性。
A trait or disease is called heritable if monozygotic twins are more similar to each other than dizygotic twins.
如果一种性状或疾病在同卵双胞胎中的同时发生的概率高于异卵双胞胎，那么这种性状或疾病是“可遗传的”。
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