Xenopus leavis was a favorite model organism during the 20th. century, but nowadays it has been replaced by diploid Xenopus tropicalis, which has not only shorter generation time, but also smaller genom. One of the disadvantages of Xenopus tropicalis is the lack of full physical and linkage map. According to JGI genome database (assembly 4.1) there are unmapped regions on short arm of the chromosome 2 and 7 . Several BAC clones ( with a single or dual-end sequence) has been found to be located within this region, according to a recent assembly 7.1. However , it isn't clear whether 100bp length of BAC ends is enough to place entire BAC clone into the genom of Xenopus tropicalis. In order to prove correct inclusion of these BAC clones into JGI database, several BAC clones, which are supposed to be located on short arm of chromosome 2, were picked. Using fluorescence in situ hybridisation, the signal of these BAC clones was localised on the short arm of chromosome 1 instead of chromosome 2 and in most cases they had opposite orientation. It means that the 100bp lenght of BAC ends propably isn't sufficient to place entire BAC clone on chromosome. New working protocol of BAC DNA isolation and labeling was established.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:306697 |
| Date | January 2012 |
| Creators | Špirhanzlová, Petra |
| Contributors | Krylov, Vladimír, Marec, František |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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