The geographical distance between conspecific host populations is no doubt a key determinant of the likelihood that exchanges of parasite species occur between these populations. This variable must therefore be taken into account in studies that compare parasite species richness or similarity among host populations. This paper presents a multivariate approach, based on the permutation of matric...

a total of 8641 married couples were investigated from 28 iranian populations for consanguineous marriages and coefficient of inbreeding. the results showed considerable differences in the rate and kind of consanguineous matings among the various urban, rural, tribal, and religious populations studied. the observed frequencies of the consanguineous matings in the populations of iran are higher ...

Ten markers specific to Sarcoptes mites were used in applying microsatellite genotyping to individual Sarcoptes mites collected in three European countries from 15 wild mammal populations belonging to 10 host species. The results showed that geographical separation had real biological significance for the definition of mite sub-populations, and that the degree of genetic exchange occurring betw...

How do sexual signals vary? Signals used in reproduction show considerable intraspeci®c variation that can occur at a variety of scales. One of the most important sources of variation is geographical. Wilczynski & Ryan (1999, p. 235) state that, `Among the different levels of variation observed, geographical variation provides the best material for disentangling the myriad factors shaping the e...

in order to survey the evolutionary history and impact of historical events on the genetic structure of iranian people, the hv2 region of 141 mtdna sequences related to six iranian populations were analyzed. slight and non-significant fst distances among the central-western persian speaking populations of iran testify to the common origin of these populations from one proto-population. mismatch...

little information is available regarding genetic variation in wild wheat relatives from iran. in this study, genetic diversity of 36 populations of wild einkorn wheat, triticum boeoticum, was studied using amplified fragment length polymorphism (aflp) primer combinations. seventeen aflp primer combinations led to amplify 979 scorable fragments ranging from 50 to 500 bp and of these, 429 (44%) ...

to evaluate the genetic variations in eleven fennel populations in iran, 55 accessions were analyzed by srap markers. twelve primer combinations produced 171 polymorphic bands. the cumulative dendrogram delineated fennel accessions into five major groups in accordance to the geographical regions from which the populations were originated. about 43.57% of total genetic variation was detected amo...