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Recombination, and chromosomes, in a changing environment
Author(s) -
Ellis T. H. Noel,
Moore Graham
Publication year - 2012
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.2012.04192.x
Subject(s) - chiasma , biology , genetics , meiosis , allele , chromosome , chromosomal crossover , pseudoautosomal region , ploidy , evolutionary biology , gene
Recombination is of great practical importance in breeding and the pattern of allele reassortment within populations is the central issue underlying the genetic basis of evolutionary change. But is more recombination better than less, or does that depend on circumstances? In this issue of New Phytologist, Escudero et al. (pp. 237-247) address this question directly, making use of the holocentric chromosomes of the Cyperaceae (sedges). Escudero et al have compared habitat preference and plant morphological traits with chromosome number in Carex to test the idea that environmental stability may permit high recombination rates.Peer reviewe