2013 Fiscal Year Final Research Report
Genomic and chromosomal evolution of vertebrates inferred from comparative gene mapping
| Project/Area Number |
24770226
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Evolutionary biology
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| Research Institution | Nagoya University |
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Principal Investigator |
UNO Yoshinobu 名古屋大学, 生命農学研究科, 研究員 (60609717)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | FISH / 核型進化 / マイクロ染色体 / 脊椎動物 / 染色体地図 / 両生類 / Xenopus / 異質四倍体 |
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| Research Abstract |
To deduce the process of genomic and chromosomal evolution in vertebrates, I constructed a chromosome map of Xenopus (Silurana) tropicalis using FISH mapping. The homologous segments corresponding to chicken microchromosomes have been highly conserved in X. tropicalis without microchromosomes, suggesting that the ancestral tetrapods probably had genetic linkage groups each of which corresponded to chicken microchromosomes. Next, I performed FISH mapping for an allotetraploid species, X. laevis, and constructed a comparative chromosome map between these two Xenopus species. This result indicated that the loss of duplicated genes and interchromosomal rearrangements occurred much less frequently in X. laevis allotetraploidization.
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Research Products
(5 results)
