Fedyk S, Zajkowska M, Chetnicki W
Institute of Biology, Warsaw University Białystok Branch, Poland.
Heredity (Edinb). 1993 Sep;71 ( Pt 3):221-6. doi: 10.1038/hdy.1993.129.
One hundred and twelve specimens of the common shrew from 21 populations in NE Poland were studied from an area of contact between chromosomal race II (metacentric chromosomes: hi, ko, gm, np) and race VII (ki, hn, gr, mp). No direct contact was found between the races in the study area; there were no mixed or hybrid populations. The shortest distance between populations of the two races was 1.2-1.6 km. Possible explanations for this pattern of the races' disjunction are discussed.
