dimorphism

/dahy-mawr-fiz-uhm/US // daɪˈmɔr fɪz əm //UK // (daɪˈmɔːfɪzəm) //

二形性,异形性,异形,异形现象

Definitions

n.名词 noun

1
- : Zoology. the occurrence of two forms distinct in structure, coloration, etc., among animals of the same species.Compare sexual dimorphism.
- : Botany. the occurrence of two different forms of flowers, leaves, etc., on the same plant or on different plants of the same species.
- : Crystallography. the property of some substances of crystallizing in two chemically identical but crystallographically distinct forms.

This hormonal explanation fits well with historical shifts in human sexual size dimorphism.
It is perhaps owing to this dimorphism that the family is able to show a very large number of natural hybrids.
Only after serious study of sexual dimorphism in the animal series may one venture a few reflections on feminism.
Animals having both sexes, do not necessarily show sexual dimorphism.
The fact of both the forms presenting the same case of dimorphism is very curious.
Gartner found the common primrose and cowslip very difficult to cross, but he knew nothing on dimorphism.