Article
Frequent silencing of rDNA loci on the univalent-forming genomes contrasts with their stable expression on the bivalent-forming genomes in polyploid dogroses (Rosa sect. Caninae).
Heredity - 1 Jan 2010
Khaitová L, Werlemark G, Nybom H, Kovarík A
Abstract excerpt
The polyploid species in Rosa section Caninae (2n=21, 28 or 35) are characterized by an unusual reproductive system known as odd (or asymmetric) meiosis. Only two chromosome sets form bivalents in meiosis, whereas the remaining chromosomes are transmitted as univalents through the female germline. Evolution of ribosomal rRNA genes (rDNA) does not seem to be significantly affected by interlocus homogenization in...
Read the complete abstract on PubMedTopics
Share this publication in a Topic to start or enrich a Post.