Publications by authors named "Valeria Volodkina"
Article Synopsis
- Researchers found a unique extra chromosome, called a germline-restricted chromosome (GRC), in zebra and Bengalese finches, which is only passed on through female birds and not present in their body cells or sperm.
- GRCs vary in size and genetic makeup across all 16 songbird species studied but are not found in eight other types of birds, suggesting a specific evolutionary trait of songbirds.
- The study also indicates that the GRC likely originated in the common ancestor of songbirds and has significantly evolved in their descendant species, showing minimal similarities between different songbird GRCs.
Evolution of ribosomal internal transcribed spacers in Deuterostomia.
Mol Phylogenet Evol
November 2017
Sequences of ribosomal internal transcribed spacers (ITSs) are of great importance to molecular phylogenetics and DNA barcoding, but remain unstudied in some large taxa of Deuterostomia. We have analyzed complete ITS1 and ITS2 sequences in 62 species from 16 Deuterostomia classes, with ITS sequences in 24 species from 11 classes initially obtained using unannotated contigs and raw read sequences. A general tendency for both ITS length and GC-content increase from interior to superior Deuterostomia taxa, a uniform GC-content in both ITSs within the same species, thymine content decrease in sense DNA sequences of both ITSs are shown.
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