clinal การใช้

Although birds in the north of the range are larger than in the south, the difference is clinal and the northern white-crowned shrike may be monotypic.
In his 1998 study, utilising polymorphic loci from seven hypervariable autosomal DNA loci, an autocorrelation analysis produced a clinal pattern closely matching that in Cavalli-Sforza s study.
Darker, heavily mottled individuals are typical forms of the southern and western range and may represent a clinal variation of nominate " E . i . imperialis ".
Roberts ( 1963 ) . . . talks about a Nilotic group, although we have Ramdrake saying that a clinal approach has supplanted one of Roberts's fundamental assumptions.