intergradation

/in-ter-grey-dey-shuhn/US // ˌɪn tər greɪˈdeɪ ʃən //

互调,互换,互换性,互补

Definitions

n.名词 noun

1
- : the act or process of intergrading or the state of being intergraded.
- : an evolutionary process by which different species of organisms tend to merge through a series of intermediate stages or grades.

Nevertheless, the two specimens are clearly referable to their respective species and show no tendency toward intergradation.
Intergradation was noted in animals from 23 miles southwest of Newcastle and Arvada, Wyoming.
Intergradation occurs with the latter subspecies at Vernal, Uintah County, in cranial measurements and in color.
Intergradation has been noted in specimens from the eastern and southeastern shores of Great Salt Lake.
Intergradation with Dipodomys ordii fetosus occurs near Lund.