noun, noun which may take the genitive case particle 'no'
dimorphism
Biological term referring to the existence of two distinct forms within a species, such as sexual dimorphism or seasonal forms.
この蝶には季節による両形が見られる。
Seasonal dimorphism can be observed in this butterfly.
両形の研究は進化生物学で重要だ。
The study of dimorphism is important in evolutionary biology.