Phyletic hot spots for B chromosomes in angiosperms

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dc.contributor.author Jones, R. Neil
dc.contributor.author Levin, D. A.
dc.contributor.author Palestis, B. G.
dc.contributor.author Trivers, R.
dc.date.accessioned 2009-09-29T14:28:41Z
dc.date.available 2009-09-29T14:28:41Z
dc.date.issued 2005
dc.identifier.citation Jones , R N , Levin , D A , Palestis , B G & Trivers , R 2005 , ' Phyletic hot spots for B chromosomes in angiosperms ' Evolution , pp. 962-969 . , 10.1111/j.0014-3820.2005.tb01035.x en
dc.identifier.issn 1558-5646
dc.identifier.other PURE: 119323
dc.identifier.other dspace: 2160/3104
dc.identifier.uri http://hdl.handle.net/2160/3104
dc.description Levin, D. A., Palestis, B. G., Jones, R. N., Trivers, R. (2005). Phyletic hot spots for B chromosomes in angiosperms. Evolution, 59, (5), 962-969 Key words. B chromosomes, chromosomal heterogeneity, eudicots, genome size, monocots, phylogeny. en
dc.description.abstract We determined whether supernumerary B chromosomes were nonrandomly distributed among major angiosperm lineages and among lineages within families, as well as the identity of lineages with unusually high B-chromosome frequencies (hot spots). The incidence of B chromosomes for each taxon was gathered from databases showing species with and without these chromosomes (among species with known chromosome numbers). Heterogeneity was found at all ranks above the species level. About 8% of monocots had B chromosomes versus 3% for eudicots; they were rare in nonmonocot basal angiosperms. Significant heterogeneity in B-chromosome frequency occurred among related orders, families within orders, and major taxa within families. There were many B-chromosome hot spots, including Liliales and Commelinales at the order level. At the family level, there was a trend suggesting that B-chromosome frequencies are positively correlated with genome size. en
dc.format.extent 8 en
dc.language.iso eng
dc.relation.ispartof Evolution en
dc.title Phyletic hot spots for B chromosomes in angiosperms en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1111/j.0014-3820.2005.tb01035.x
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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