Caenorhabditisphylogeny predicts convergence of hermaphroditism and extensive intron loss

the investigation of research articles in applied linguistics: convergence and divergence in iranian elt context

چکیده ندارد.

Hermaphroditism

Loss of Chloroplast trnLUAA Intron in Two Species of Hedysarum (Fabaceae): Evolutionary Implications

Previous studies have indicated that in all land plants examined to date, the chloroplast gene trnLUAA isinterrupted by a single group I intron ranging from 250 to over 1400 bp. The parasitic Epifagus virginiana haslost, however, the entire gene. We report that the intron is missing from the chloroplast genome of twoarctic species of the legume genus Hedysarum (H. alpinum, H. ...

Evidence for Extensive Recent Intron Transposition in Closely Related Fungi

Though spliceosomal introns are a major structural component of most eukaryotic genes and intron density varies by more than three orders of magnitude among eukaryotes [1-3], the origins of introns are poorly understood, and only a few cases of unambiguous intron gain are known [4-8]. We utilized population genomic comparisons of three closely related fungi to identify crucial transitory phases...

Microhomology-Mediated Intron Loss during Metazoan Evolution

How introns are lost from eukaryotic genomes during evolution remains an enigmatic question in biology. By comparative genome analysis of five Caenorhabditis and eight Drosophila species, we found that the likelihood of intron loss is highly influenced by the degree of sequence homology at exon-intron junctions: a significant elevated degree of microhomology was observed for sequences immediate...