Variations in 5S rDNAs in diploid and tetraploid offspring of red crucian carp × common carp.

ABSTRACT:

Background

The allotetraploid hybrid fish (4nAT) that was created in a previous study through an intergeneric cross between red crucian carp (Carassius auratus red var., ♀) and common carp (Cyprinus carpio L., ♂) provided an excellent platform to investigate the effect of hybridization and polyploidization on the evolution of 5S rDNA. The 5S rDNAs of paternal common carp were made up of a coding sequence (CDS) and a non-transcribed spacer (NTS) unit, and while the 5S rDNAs of maternal red crucian carp contained a CDS and a NTS unit, they also contained a variable number of interposed regions (IPRs). The CDSs of the 5S rDNAs in both parental fishes were conserved, while their NTS units seemed to have been subjected to rapid evolution.

Results

The diploid hybrid 2nF₁

SUBMITTER: Ye L 

PROVIDER: S-EPMC5549377 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature