Abstract

Karyotypes of allopatric Egyptian and Israeli mole rats <i>(Spalax ehrenbergi</i>) suggest that these populations share common ancestry. Palaeontological data (faunal and climate) provide evidence that the two populations have been separated for 10,000 to 25,000 years. The combined evidence implies chromosomal stability since isolation and constitutes the best estimate for length of karyotype stability known for mammals.

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