Steps in the evolution of heteromorphic sex chromosomes
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Open Access
- 25 May 2005
- journal article
- review article
- Published by Springer Nature in Heredity
- Vol. 95 (2), 118-128
- https://doi.org/10.1038/sj.hdy.6800697
Abstract
We review some recently published results on sex chromosomes in a diversity of species. We focus on several fish and some plants whose sex chromosomes appear to be ‘young’, as only parts of the chromosome are nonrecombining, while the rest is pseudoautosomal. However, the age of these systems is not yet very clear. Even without knowing what proportions of their genes are genetically degenerate, these cases are of great interest, as they may offer opportunities to study in detail how sex chromosomes evolve. In particular, we review evidence that recombination suppression occurs progressively in evolutionarily independent cases, suggesting that selection drives loss of recombination over increasingly large regions. We discuss how selection during the period when a chromosome is adapting to its role as a Y chromosome might drive such a process.Keywords
This publication has 106 references indexed in Scilit:
- The role of RNA interference in heterochromatic silencingNature, 2004
- A primitive Y chromosome in papaya marks incipient sex chromosome evolutionNature, 2004
- The male-specific region of the human Y chromosome is a mosaic of discrete sequence classesNature, 2003
- Complex Events in the Evolution of the Human Pseudoautosomal Region 2 (PAR2)Genome Research, 2003
- DMY is a Y-specific DM-domain gene required for male development in the medaka fishNature, 2002
- Reduced adaptation of a non-recombining neo-Y chromosomeNature, 2002
- Phylogeny and Evolution of the Drosophila nasuta Subgroup Based on Mitochondrial ND4 and ND4L Gene SequencesMolecular Phylogenetics and Evolution, 1999
- The evolutionary dynamics of repetitive DNA in eukaryotesNature, 1994
- Cytogenetic and molecular analysis of the multiple sex chromosome system of Rumex acetosaHeredity, 1994
- Adaptive protein evolution at the Adh locus in DrosophilaNature, 1991