The classical model of concerted evolution states that hundreds to thousands of ribosomal
DNA (rDNA) units undergo homogenization, making the multiple copies of the individual …

Polyploidy is a major evolutionary process in eukaryotes—particularly in plants and, to a
less extent, in animals, wherein several past and recent whole-genome duplication events …

Molecular cytogenetic data on the number and position of 45S ribosomal RNA genes (rDNA;
located in nucleolus organizing regions, NORs) detected by FISH in 330 species of 77 …

Background Loaches of the family Nemacheilidae are one of the most speciose elements of
Palearctic freshwater ichthyofauna and have undergone rapid ecological adaptations and …

Allopolyploid genomes are divided into compartments called subgenomes that are derived
from lower ploidy ancestors. In African clawed frogs of the subgenus Xenopus (genus …

The widely distributed ray-finned fish genus Carassius is very well known due to its unique
biological characteristics such as polyploidy, clonality, and/or interspecies hybridization …

Polyploid animals have independently evolved from diploids in diverse taxa across the tree
of life. We review a few polyploid animal species or biotypes where recently developed …

Several studies on 5S ribosomal DNA (5S rDNA) have been focused on a subset of the
following features in mostly one organism: number of copies, pseudogenes, secondary …

The crucian carp Carassius carassius (Linnaeus, 1758), is native to many European
freshwaters. Despite its wide distribution, the crucian carp is declining in both the number …

This book is the first to report that research in allogenics/xenogenics has conclusively shown
that fishes have retained bisexual potency even after sexual maturity and spermiation. The …