相似性假说通过物种构成的相似性来解释物种丧失是如何影响生物量的变异性的，但还没有得到检验。
The similarity hypothesis may explain how biodiversity loss influences variability in biomass of plant communities but remains untested.
本研究对特定人群体中MHC相似性影响伴侣选择的假说提供了依据。
This study thus supports the hypothesis that the MHC influences mate choice in some human populations.
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