Chromosome Evolution in Bats as Revealed by FISH: The Ongoing Search for the Ancestral Chiropteran Karyotype |
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Authors: | Volleth M Eick G |
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Institution: | Department of Human Genetics, Otto-von-Guericke-University, Magdeburg, Germany. |
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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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