In zoology, intergradation is the way in which two distinct subspecies are connected via areas where populations are found that have the characteristics...

leafbird are known to approach each other, but there is no evidence of intergradation. The male is green-bodied with a yellow-tinged head, black face and...

below (compared to more northern subspecies), but if this is a sign of intergradation with chionogaster or a north-south cline which includes both the members...

slider (Trachemys scripta elegans × Trachemys scripta scripta) is an intergradation of a red-eared slider and yellow-bellied slider subspecies. Intergrade...

hybrids Genetic admixture Genetic erosion Grex (horticulture) Hybridity Intergradation Hybridogenesis Hybrot Inbreeding Breeding back Interspecific pregnancy...

clinal variation over the large geographic range and the extensive intergradation means that the geographical limits and acceptance of the various subspecies...

Morocco. Neck, upper back and shoulders black in adult males. Wide intergradation with P. o. gibraltariensis and treated as a synonym of it by many authorities...

northern Malawi and southwestern Tanzania as well. Such a broad area of intergradation has been taken as evidence of substantial genetic exchange between the...

usually by comparing the anatomical features of hybrids that result from intergradation of the classical subspecies. Despite the imprecision, the subspecies...

contact" or "primary intergradation"), or "secondary contact" (also known as "secondary introgression", or "secondary intergradation"). Clines produced...

alters the apparent phylogenies. Two subspecies are recognised although intergradation is possible (intermediates between haringtoni and eastern spot-billed...

differ markedly in adaptation and ecology, and show only very limited intergradation. The two populations also winter separately, with the southwestern wintering...

consistently in measurements and plumage, and there is no evidence of intergradation between them. The following subspecies are recognised: A. m. malacensis...

disputed subspecies distribution limits, and revealing intraspecific intergradation, in the Common Redstart Phoenicurus phoenicurus using citizen science...

pelage-based designations have been shown to be questionable. Complete colour intergradation occurs in both O. dalli sheep subspecies (i.e., Dall's and Stone's)...

Curruca curruca margelanica – northern China Two more taxa occur in the intergradation zone with the small whitethroat, stretching from the northern Caspian...

other subspecies of D. punctatus. In some regions, there are areas of intergradation with other subspecies. Generally from 10 to 15 inches (25 to 38 centimetres)...

plumage. The gradual variation over geographic range and extensive intergradation means that acceptance of the various subspecies varies between authorities...

subspecies, mostly no longer recognised as distinct due to the extensive intergradation between them; the following are still recognised: Epilobium canum subsp...

geographically isolated. Their ranges often overlap, forming zones of intergradation where both subspecies exist and interbreed. Instead of geographic isolation...

(Pseudotsuga glauca). The strong ecological and genetic differentiation with intergradation limited primarily to postglacial contact zones in British Columbia supports...

adjoining subspecies, O. s. spaldingii and O. s. melasmenus with a zone of intergradation. Unmistakable thrush-like, ground-dwelling, birds. Males and females...

released into the wild. Red-eared slider × yellow-bellied slider, an intergradation of a red-eared slider and yellow-bellied slider subspecies. Yellow-bellied...

blackness of the upperparts quite well. Here too is a broad zone of intergradation. Pacific birds molt after breeding, and females shed a few body feathers...

biology portal History of science portal Philosophy portal Breed Cultivar Intergradation Plant variety (several definitions) Population Ring species Species...

validity of these subspecies has been questioned as there is extensive intergradation between them and the species shows extreme variability in its appearance;...

The gradual clinal variation over the large geographic range and the intergradation of the different subspecies means that the geographical limits, and...

the North African subspecies camelus, indicating there may have been intergradation between the two. Almost indistinguishable from that subspecies, the...

of the Eastern Clade often show clinal variation and large areas of intergradation. For example, clines connect P. c. pallasi-karpowi-torquatus-takatsukasae...

limit in Russia is hard to define, due to extensive hybridization and intergradation with the Siberian spruce, but is usually given as the Ural Mountains...