Comparative genome analyses indicate that every taxonomic group so far studied contains
10–20% of genes that lack recognizable homologs in other species. Do such 'orphan'or …

Plant genome structure is largely derived from the differing specificities, abundances and
activities of transposable elements. Recent studies indicate that both the amplification and …

Pigeonpea is an important legume food crop grown primarily by smallholder farmers in
many semi-arid tropical regions of the world. We used the Illumina next-generation …

Comparison of whole genomes has revealed large and frequent changes in the size of gene
families. These changes occur because of high rates of both gene gain (via duplication) and …

One of the unique insights provided by the growing number of fully sequenced genomes is
the pervasiveness of gene duplication and gene loss. Indeed, several metrics now suggest …

To date, cross-species comparisons of genetic interactomes have been restricted to small or
functionally related gene sets, limiting our ability to infer evolutionary trends. To facilitate a …

Orphan genes are protein-coding regions that have no recognizable homolog in distantly
related species. A substantial fraction of coding regions in any genome sequenced consists …

Background All sequenced genomes contain a proportion of lineage-specific genes, which
exhibit no sequence similarity to any genes outside the lineage. Despite their prevalence …

Population genetic theory shows that the efficacy of natural selection is limited by linkage—
selection at one site interferes with selection at linked sites. Such interference slows …

A large number of genes is shared by all living organisms, whereas many others are unique
to some specific lineages, indicating their different times of origin. The availability of a …