Conservation of sequences in related genomes of Apodemus: constraints on the maintenance of satellite DNA sequences.
AUTOR(ES)
Brown, S D
RESUMO
Satellites from two related species of the Apodemus genus, A. sylvaticus and A. flavicollis, have been analysed with restriction enzymes Taq I, Alu I and Hind III. The restriction maps are closely conserved between species and show a novel feature of two differing internal periodicities within a 375 base pair repeating unit detected by two different restriction enzymes. This places constraints on the introduction of the observed restriction sites according to current models such as unequal crossing-over. The implications of such a conserved sequence and its presence in other species are discussed.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=327863Documentos Relacionados
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