Evidence for 14 homeobox gene clusters in human genome ancestry

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Evidence for 14 homeobox gene clusters in human genome ancestry

The arrangement of Hox genes into physical clusters is fundamental to the patterning of animal body plans. Other homeobox genes are often described as dispersed, with only occasional examples of linkage reported, such as the amphioxus ParaHox and Drosophila 93D/E clusters. This clustering is unlikely to be the derived condition, as the genes of the ParaHox and 93D/E clusters are phylogeneticall...

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Dispersal of NK homeobox gene clusters in amphioxus and humans.

The Drosophila melanogaster genome has six physically clustered NK-related homeobox genes in just 180 kb. Here we show that the NK homeobox gene cluster was an ancient feature of bilaterian animal genomes, but has been secondarily split in chordate ancestry. The NK homeobox gene clusters of amphioxus and vertebrates are each split and dispersed at two equivalent intergenic positions. From the a...

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The relatively new and rapidly expanding field of comparative genomics provides a wealth of data useful for testing the hypothesis that humans and other forms of life share common ancestry. Numerous independent lines of genomics evidence strongly support the hypothesis that our species shares a common ancestor with other primates. Additional lines of evidence also indicate that our species has ...

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The human PRD-like homeobox gene LEUTX has a central role in embryo genome activation

Leucine twenty homeobox (LEUTX) is a paired (PRD)-like homeobox gene that is expressed almost exclusively in human embryos during preimplantation development. We previously identified a novel transcription start site for the predicted human LEUTX gene based on the transcriptional analysis of human preimplantation embryos. The novel variant encodes a protein with a complete homeodomain. Here, we...

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The human RRM2P4 pseudogene has a pattern of nucleotide polymorphism that is unlike any locus published to date. A gene tree constructed from a 2.4-kb fragment of the RRM2P4 locus sequenced in a sample of 41 worldwide humans clearly roots in East Asia and has a most-recent common ancestor approximately 2 Myr before present. The presence of this basal lineage exclusively in Asia results in highe...

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ژورنال

عنوان ژورنال: Current Biology

سال: 2000

ISSN: 0960-9822

DOI: 10.1016/s0960-9822(00)00676-x