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Partition of H. sapiens and M. musculus genes into age groups

Range	Table - link
Organism	Mammals
Reference	Prat Y, Fromer M, Linial N, Linial M. Codon usage is associated with the evolutionary age of genes in metazoan genomes. BMC Evol Biol. 2009 Dec 8 9: 285. doi: 10.1186/1471-2148-9-285. p.3 table 1PubMed ID19995431
Method	"Protein encoding gene sequences were obtained from the ENSEMBL database [24]. [Researchers] included in [their] analysis only genes marked as ‘known’ and ignored genes that are annotated as ‘novel’."
Comments	For the phylogenetic tree used to define the relative age groups for the human and mouse genes (p.4 figure 1) see link
Entered by	Uri M
ID	108988