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排序方式: 共有104条查询结果,搜索用时 625 毫秒
51.
E. Glass Otto Dyes Schönberg Nippe C. Neuhaus Franz Jahnel Wierig Frenzel Plenz Birkenfeld Schwarzacher Ruge A. Köhler R. Gutzeit KÄrber Tietze M. H. Fischer Walcher Schaefer P. Werner Lochte Betlheim Kappus G. Stiefler H. Haenel Baumm P. A. Jaensch Anselmino Laehr Edv Gundersen Eisenhardt G. StraΒmann Iida Einar Sjövall Giese 《International journal of legal medicine》1935,24(2-3):153-168
Ohne Zusammenfassung 相似文献
52.
Thomas Spiecker Hellner Nestmann E. König F. Eisler Wortmann Jendralski Schrader v. Noel F. Scheminzky Kyrieleis Trendtel Esser Meixner Gärtner H. Pfister Ganter Flügel Hiller H. Pfister L. Wachholz Nippe Kranzfelder Schönberg B. Mueller G. Strassmann P. Fraenckel Schwarzacher L. Wachholz Leibbrand Deus Walcher Otto Strauβ Roth Esser Kessel Ravasini Koritzinsky Mayser E. Vincke Heel 《International journal of legal medicine》1936,26(5-6):44-51
Ohne Zusammenfassung 相似文献
53.
Eduardo A. Moscone Rosabelle Samuel Trude Schwarzacher Dieter Schweizer Andrea Pedrosa-Harand 《Chromosome research》2007,15(7):931-943
The genus Cephalanthera is an excellent plant group for karyotype evolution studies because it exhibits a dysploid series and bimodal karyotypes.
With the aim of understanding their chromosomal and phylogenetic relationships, rRNA genes and the Arabidopsis-type telomeric sequence were mapped by fluorescence in-situ hybridization (FISH), and the rDNA intergenic spacer (ITS) was sequenced for the first time in three European species: C. longifolia (2n = 4x = 32), C. damasonium (2n = 4x = 36) and C. rubra (2n = 4x = 44). One 45S and three 5S rDNA sites are observed in C. longifolia, one 45S and two 5S sites in C. damasonium, and two 45S and one 5S site in C. rubra. Telomeric signals were observed at every chromosome end in all three species and C. damasonium also displays interstitial signals on three chromosome pairs. In agreement with chromosome data, molecular analyses support
C. longifolia and C. damasonium as closely related taxa, while C. rubra stands apart. Possible pathways of karyotype evolution are discussed in reference to a previous hypothesis. The results indicate
that complex chromosomal rearrangements, possibly involving Robertsonian fusions and fissions, loss of telomeric repeats,
gain or loss of rDNA sites and other heterochromatic sequences and inversions, may have contributed to generating the present-day
karyotypes.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
54.
Gustavo C. S. Kuhn Fabio M. Sene Orlando Moreira-Filho Trude Schwarzacher John S. Heslop-Harrison 《Chromosome research》2008,16(2):307-324
We aimed to study patterns of variation and factors influencing the evolutionary dynamics of a satellite DNA, pBuM, in all
seven Drosophila species from the buzzatii cluster (repleta group). We analyzed 117 alpha pBuM-1 (monomer length 190 bp) and 119 composite alpha/beta (370 bp) pBuM-2 repeats and determined the chromosome location and long-range organization on DNA fibers of major sequence
variants. Such combined methodologies in the study of satDNAs have been used in very few organisms. In most species, concerted
evolution is linked to high copy number of pBuM repeats. Species presenting low-abundance and scattered distributed pBuM repeats
did not undergo concerted evolution and maintained part of the ancestral inter-repeat variability. The alpha and alpha/beta repeats colocalized in heterochromatic regions and were distributed on multiple chromosomes, with notable differences between
species. High-resolution FISH revealed array sizes of a few kilobases to over 0.7 Mb and mutual arrangements of alpha and alpha/beta repeats along the same DNA fibers, but with considerable changes in the amount of each variant across species. From sequence,
chromosomal and phylogenetic data, we could infer that homogenization and amplification events involved both new and ancestral
pBuM variants. Altogether, the data on the structure and organization of the pBuM satDNA give insights into genome evolution
including mechanisms that contribute to concerted evolution and diversification.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
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Weimann Kroi Mendel Kurt Michelsson G. Boeminghaus Flrcken H. Klestadt Schwarzacher Zillmer Nippe Giese Behr Quint Walcher Colley Plattner Mller-Hess Foerster v. Neureiter Jendralski F. Schnberg Schilf Buhtz 《International journal of legal medicine》1928,12(6):125-132
International Journal of Legal Medicine - 相似文献
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