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  1. ...not evolve by recombination suppression after the acquisition of new sex-determining genes but by the ancestral nature of the low crossover rates in males.Sex reversal, as we observed in L. boringii, is common among anurans (Perrin 2009; Stöck et al. 2011; Rodrigues et al. 2018), poikilothermic vertebrates...
  2. ...been characterized only at the sequence level for humans, Great Apes, Old World Monkeys and the domestic mouse. In Catarrhini, the PAB maps within the gene coding for the XG blood group antigen, also called PBDX (pseudoautosomal boundary divided on the X) ( Ellis et al. 1990 , 1994 ). As a result, XG...
  3. ...the possibility that they may represent the products of the repair of broken chromosome ends. Alternatively, the duplication of DNA from recombinationally inert centromeres to recombinationally highly active telomeres could represent a novel way of removing functional genes from the cumulative effect of ratchet...
  4. ...clones representing regions of sequence variation among strains. Information on the clone set is provided at http://microarrays.roswellpark.org . We prepared DNA spotting solutions from the BACs by ligation-mediated PCR as described previously for assembly of human BAC arrays ( Snijders et al. 2001 ). We...
  5. ..., respectively. The similarity among the human FOXD4 genes (97.7% to 98.9% identity at the nucleotide level) correlates with the overall homology among the four segmental duplications that generated them ( Fan et al. 2002 ). View larger version: In this window In a new window Figure 3. ( A ) Comparison...
  6. ...compared evolutionary dynamics between fused F(20 + 17,Z) and autosomes in two recently diverged species, G. molesta and G. dimorpha. First, we employed an ABBA–BABA approach to testing for relative resistance to interspecific gene flow among chromosomal elements. The introgression rate (defined...
  7. ...(red links), and interactions among microchromosome (green links). (B) Hi-C contact maps representing a pair of macrochromosomes for human (HSA, Rao et al. 2014), Tasmanian Devil (SHA, Álvarez-González et al. 2022a), chicken (GGA, Fishman et al. 2019), and Northern Giant Musk Turtle (STR, this study...
  8. ...for the speciation and adaptations such as mimicry (Joron et al. 2011; Hill et al. 2019; de Vos et al. 2020), mostly owing to reciprocal translocation and repeated events of fusion and fission among a highly dynamic number of chromosomes between species.To better understand the phenomenon of scrambling, we study...
  9. ...rearrangement in these lineages compared with those of species pairs of similar divergence times in other vertebrate lineages (Fig. 3A). Among vertebrates, mammals and birds have relatively long-standing sex chromosomes (X/Y and Z/W, respectively) shared throughout these individual taxa that arose more than 48...
  10. ...species. We found ratites exhibited the lowest numbers of intra- and inter-chromosomal changes among birds since their divergence with turtles. The small-sized and gene-rich emu microchromosomes have frequent inter-chromosomal contacts that are associated with housekeeping genes, which appears...
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