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Insights into the structural and functional evolution of plant genomes afforded by the nucleotide sequences of chromosomes 2 and 4 of Arabidopsis thaliana
Author(s) -
Bancroft Ian
Publication year - 2000
Publication title -
yeast
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.923
H-Index - 102
eISSN - 1097-0061
pISSN - 0749-503X
DOI - 10.1002/(sici)1097-0061(200004)17:1<1::aid-yea3>3.0.co;2-v
Subject(s) - biology , genome , gene duplication , arabidopsis thaliana , gene , genetics , functional divergence , gene family , mutant
The rapidly accumulating genome sequence data from the plant Arabidopsis thaliana allows more detailed analysis of genome content and organisation than ever before possible in plants. The genome shows a surprisingly high level of genetic redundancy, with as many as 75% of gene products showing significant homology to another protein of A. thaliana . Many duplicated genes occur in arrays of conserved order and indicate that A. thaliana is likely to have had a tetraploid ancestor. Analysis of the divergence of duplicated genome segments leads to the prediction of two major modes of plant genome evolution: macro‒scale duplication and rearrangement of chromosomes and micro‒scale translocations, duplication and loss of individual genes or small groups of genes. Copyright © 2000 John Wiley & Sons, Ltd.