Abstract:
:Stable hybrid zones in which ecologically divergent taxa give rise to a range of recombinants are natural laboratories in which the genetic basis of adaptation and reproductive isolation can be unraveled. One such hybrid zone is formed by the fire-bellied toads Bombina bombina and B. variegata (Anura: Discoglossidae). Adaptations to permanent and ephemeral breeding habitats, respectively, have shaped numerous phenotypic differences between the taxa. All of these are, in principle, candidates for a genetic dissection via QTL mapping. We present here a linkage map of 28 codominant and 10 dominant markers in the Bombina genome. In an F2 cross, markers that were mainly microsatellites, SSCPs or allozymes were mapped to 20 linkage groups. Among the 40 isolated CA microsatellites, we noted a preponderance of compound and frequently interleaved CA-TA repeats as well as a striking polarity at the 5' end of the repeats.
journal_name
Heredity (Edinb)journal_title
Heredityauthors
Nürnberger B,Hofman S,Förg-Brey B,Praetzel G,Maclean A,Szymura JM,Abbott CM,Barton NHdoi
10.1038/sj.hdy.6800291keywords:
subject
Has Abstractpub_date
2003-08-01 00:00:00pages
136-42issue
2eissn
0018-067Xissn
1365-2540pii
6800291journal_volume
91pub_type
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