Short simple sequence stretches occur as highly repetitive elements in all eukaryotic
genomes and partially also in prokaryotes and eubacteria (1–6). They are thought to arise by …

We have developed a non-radioactive in situ hybridization technique for the localization of
RNA in whole mount Drosophila embryos. After fixation, whole embryos are hybridized in situ …

In the last two decades, the widespread application of genetic and genomic approaches has
revealed a bacterial world astonishing in its ubiquity and diversity. This review examines …

Simple sequences are stretches of DNA which consist of only one, or a few tandemly
repeated nucleotides, for example poly (dA).poly (dT) or poly (dG-dT).poly (dC-dA). These two …

The analysis of slippage synthesis of simple sequence DNA in vitro sheds some light on the
question of how simple sequences arise in vivo . We show that it is possible to synthesize all …

Tribolium castaneum is a member of the most species-rich eukaryotic order, a powerful model
organism for the study of generalized insect development, and an important pest of stored …

Taxonomy underpins all biological research, with implications for many basic scientific and
applied fields. Insights into the stability or change of animal and plant guilds require species …

DNA regions which are composed of a single or relatively few short sequence motifs usually
in tandem (‘pure simple sequences’) have been reported in the genomes of diverse species …

Gene evolution has long been thought to be primarily driven by duplication and rearrangement
mechanisms. However, every evolutionary lineage harbours orphan genes that lack …

THE existence of sympatric speciation—that populations diverge into species in the absence
of physical or ecological barriers—is controversial 1–6 . The East African Great Lakes …