High‐resolution chromosome analysis of eight Palaearctic and Oriental species of white‐toothed shrews reveals almost complete chromosomal homology between the karyotypes studied, and extensive G‐band homology is demonstrated even between species of the genera Crocidura and Suncus. Robertsonian translocations, tandem fusions, fissions, whole‐arm reciprocal translocations, centromeric shifts, heterochromatin additions, and inversions are identified as the main mechanisms of chromosomal evolution. The evolutionary relationships of the Eurasian crocidurines under study are reconstructed and a hypothetical ancestral karyotype with 44 chromosomes is proposed.
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