Meiotic analysis of XX/XY and neo-XX/XY sex chromosomes in Phyllostomidae by cross-species chromosome painting revealing a common chromosome 15-XY rearrangement in Stenodermatinae

2010 ◽  
Vol 18 (6) ◽  
pp. 667-676 ◽  
Author(s):  
Renata Coelho Rodrigues Noronha ◽  
Cleusa Yoshiko Nagamachi ◽  
Patricia C. M. O’Brien ◽  
Malcolm A. Ferguson-Smith ◽  
Julio Cesar Pieczarka
2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Marcelo B Cioffi ◽  
Antonio Sánchez ◽  
Juan A Marchal ◽  
Nadezda Kosyakova ◽  
Thomas Liehr ◽  
...  

Genetica ◽  
2013 ◽  
Vol 141 (1-3) ◽  
pp. 1-9 ◽  
Author(s):  
Marlon F. Pazian ◽  
Cristiane Kioko Shimabukuro-Dias ◽  
José Carlos Pansonato-Alves ◽  
Claudio Oliveira ◽  
Fausto Foresti

2005 ◽  
Vol 13 (4) ◽  
pp. 389-399 ◽  
Author(s):  
Ling Huang ◽  
Wenhui Nie ◽  
Jinhuan Wang ◽  
Weiting Su ◽  
Fengtang Yang

2018 ◽  
Vol 5 (8) ◽  
pp. 171539 ◽  
Author(s):  
Fumio Kasai ◽  
Patricia C. M. O'Brien ◽  
Jorge C. Pereira ◽  
Malcolm A. Ferguson-Smith

Extensive chromosome homologies revealed by cross-species chromosome painting between marsupials have suggested a high level of genome conservation during evolution. Surprisingly, it has been reported that marsupial genome sizes vary by more than 1.2 Gb between species. We have shown previously that individual chromosome sizes and GC content can be measured in flow karyotypes, and have applied this method to compare four marsupial species. Chromosome sizes and GC content were calculated for the grey short-tailed opossum (2 n = 18), tammar wallaby (2 n = 16), Tasmanian devil (2 n = 14) and fat-tailed dunnart (2 n = 14), resulting in genome sizes of 3.41, 3.31, 3.17 and 3.25 Gb, respectively. The findings under the same conditions allow a comparison between the four species, indicating that the genomes of these four species are 1–8% larger than human. We show that marsupial genomes are characterized by a low GC content invariable between autosomes and distinct from the higher GC content of the marsupial × chromosome.


2007 ◽  
Vol 274 (1615) ◽  
pp. 1333-1340 ◽  
Author(s):  
A.T Pardini ◽  
P.C.M O'Brien ◽  
B Fu ◽  
R.K Bonde ◽  
F.F.B Elder ◽  
...  

Despite marked improvements in the interpretation of systematic relationships within Eutheria, particular nodes, including Paenungulata (Hyracoidea, Sirenia and Proboscidea), remain ambiguous. The combination of a rapid radiation, a deep divergence and an extensive morphological diversification has resulted in a limited phylogenetic signal confounding resolution within this clade both at the morphological and nucleotide levels. Cross-species chromosome painting was used to delineate regions of homology between Loxodonta africana (2 n =56), Procavia capensis (2 n =54), Trichechus manatus latirostris (2 n =48) and an outgroup taxon, the aardvark ( Orycteropus afer , 2 n =20). Changes specific to each lineage were identified and although the presence of a minimum of 11 synapomorphies confirmed the monophyly of Paenungulata, no change characterizing intrapaenungulate relationships was evident. The reconstruction of an ancestral paenungulate karyotype and the estimation of rates of chromosomal evolution indicate a reduced rate of genomic repatterning following the paenungulate radiation. In comparison to data available for other mammalian taxa, the paenungulate rate of chromosomal evolution is slow to moderate. As a consequence, the absence of a chromosomal character uniting two paenungulates (at the level of resolution characterized in this study) may be due to a reduced rate of chromosomal change relative to the length of time separating successive divergence events.


PLoS ONE ◽  
2015 ◽  
Vol 10 (3) ◽  
pp. e0122845 ◽  
Author(s):  
Talita Fernanda Augusto Ribas ◽  
Luis Reginaldo Ribeiro Rodrigues ◽  
Cleusa Yoshiko Nagamachi ◽  
Anderson José Baia Gomes ◽  
Jorge das Dores Rissino ◽  
...  

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