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The origin and timing of the diversification of modern birds remains controversial, primarily because phylogenetic relationships… Expand Hundreds of highly conserved distal cis-regulatory elements have been characterized so far in vertebrate genomes. Many thousands… Expand Despite the recent large-scale efforts dedicated to comprehensive phylogenetic analyses using mitochondrial and nuclear DNA… Expand The value of short interspersed elements (SINEs) for diagnosing common ancestry is being expanded to examine the differential… Expand In animals and protozoa, gene-specific double-stranded RNA (dsRNA) triggers degradation of homologous cellular RNAs, a phenomenon… Expand Several subfamilies of the salmonid Hpa I short interspersed element (SINE) family were isolated from salmonid genomes and were… Expand Three families of tRNA-derived repeated retroposons in the genomes of salmonid species have been isolated and characterized… Expand In both humans and mice, two genes encode phosphoglycerate kinase, a key enzyme in the glycolytic pathway. The pgk-1 gene is… Expand PERSPECTIVES AND SUMMARY . 632 THE AMAZING VARIETY OF RETROPOSONS "......... 635 The Viral Supeifamily 635 The Nonviral… Expand Publisher Summary This chapter describes the origin and evolution of retroposons. It deals with two of them which operate on very… Expand