| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Estadual Paulista Julio de Mesquita Filho UN, Inst Biociencias, Dept Biol, Lab Citogenet, Av 24A 1515, BR-13506900 Rio Claro, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | BIOLOGIA; v. 73, n. 3, p. 295-298, MAR 2018. |
| Web of Science Citations: | 0 |
| Abstract | |
The U small nuclear RNA (U snRNA) genes comprise a multigene family and are required for splicing of pre-mRNA. In this paper, we aimed to study the chromosomal location of the U2 snRNA gene in Megaleporinus, Leporinus and Schizodon species, which constitute interesting models for the study of repetitive DNA and genomic evolution in fish once the group comprises species with and without heteromorphic sex chromosomes. The all six species showed 2n = 54 chromosomes: Megaleporinus elongatus, Megaleporinus macrocephalus, Leporinus striatus, Leporinus friderici, Schizodon boreal and Schizodon isognathus. The U2 snDNA clusters were evident in only one medium-sized submetracentric pair in all analyzed species and this may represent a condition shared by Anostomidae family. (AU) | |
| FAPESP's process: | 10/51339-0 - Study of repetitive elements present in the genome of species of Anostomidae (Pisces, Characiformes) |
| Grantee: | Patricia Pasquali Parise Maltempi |
| Support Opportunities: | Regular Research Grants |