R2 and Non-Site-Specific R2-Like Retrotransposons of the German Cockroach, .

The structural and functional organization of the ribosomal RNA gene cluster and the full-length R2 non-LTR retrotransposon (integrated into a specific site of 28S ribosomal RNA genes) of the German cockroach, , is described. A partial sequence of the R2 retrotransposon of the cockroach is also analyzed. The analysis of previously published next-generation sequencing data from the genome reveals a new type of retrotransposon closely related to R2 retrotransposons but with a random distribution in the genome.

Intrabreed and interbreed variation of the BOLA-DRB3.2 gene in the Kostroma and Yaroslavl indigenous Russian cattle breeds.

Intrabreed and interbreed variation of BOLA-DRB3 exon 2 (BOLA-DRB3.2) was for the first time studied in the Kostroma and Yaroslavl cattle breeds by PCR-RFLP. These breeds are among the best Russian breeds and were developed as dairy-beef and dairy cattle, respectively.