B-chromosome evolution
Top Cited Papers
- 29 February 2000
- journal article
- review article
- Published by The Royal Society in Philosophical Transactions Of The Royal Society B-Biological Sciences
- Vol. 355 (1394), 163-178
- https://doi.org/10.1098/rstb.2000.0556
Abstract
B chromosomes are extra chromosomes to the standard complement that occur in many organisms. They can originate in a number of ways including derivation from autosomes and sex chromosomes in intraand interspecies crosses. Their subsequent molecular evolution resembles that of univalent sex chromosomes, which involves gene silencing, heterochromatinization and the accumulation of repetitive DNA and transposons. B-chromosome frequencies in populations result from a balance between their transmission rates and their effects on host fitness. Their long-term evolution is considered to be the outcome of selection on the host genome to eliminate B chromosomes or suppress their effects and on the B chromosome's ability to escape through the generation of new variants. Because B chromosomes interact with the standard chromosomes, they can play an important role in genome evolution and may be useful for studying molecular evolutionary processes.Keywords
This publication has 192 references indexed in Scilit:
- B-chromosome origin in the endemic New Zealand frog Leiopelma hochstetteri through sex chromosome devolutionGenome, 1998
- Isolation and characterization of a retroelement from B chromosome (PSR) in the parasitic wasp Nasonia vitripennisInsect Molecular Biology, 1995
- Genetic control of the rate of transmission of rye B chromosomes. II. 0B × 2B crossesHeredity, 1995
- Synaptonemal complex analysis of domestic sheep (Ovis aries) with Robertsonian translocations. III. Deficient pairing and NOR role in Massey III heterozygotesGenome, 1994
- The evolutionary dynamics of repetitive DNA in eukaryotesNature, 1994
- Bewildering Bs: an impression of the 1st B-Chromosome ConferenceHeredity, 1994
- Role for early replicating DNA in preventing precocious nucleologenesis in proliferating plant cellsProtoplasma, 1993
- A sequence specific to B chromosomes of Brachycome dichromosomaticaGenome, 1991
- Genetic control of the rate of transmission of rye B chromosomes. I. Effects in 2B × 0B crossesHeredity, 1991
- Quantitative variation and chromosomal location of satellite DNAsGenetics Research, 1987