Abstract
Chiroptera, the second largest order of mammals, comprises more than 1,000 species in 18 highly morphologically diverse families. Chromosome painting with human probes has been applied to 10 bat species from 8 families. Except for the combination 10/12pq/22q, all syntenic segmental associations proposed for the mammalian ancestor have been found in Chiroptera. Bat-specific painting probes, established from 4 species of 3 families, have been used in whole chromosome painting experiments in 29 species from 8 families. The results show that the prevailing mode of chromosomal evolution in bats is Robertsonian translocation with a large number of convergent events. Given our present knowledge of chiropteran karyotypes, only a few elements of the ancestral chiropteran karyotype can be reconstructed with confidence.
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