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Compositional properties of coding sequences and mammalian phylogeny

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Abstract

The compositional distributions of large DNA fragments reflect those of the isochores that make up vertebrate genomes and can provide novel phylogenetic insights in the case of mammalian genomes (see Sabeur et al. 1993). This approach has been complemented here by an analysis of the compositional patterns of coding sequences and their codon positions (which also reflect the isochore pattern) and by a comparison of the base compositions of codon positions from homologous genes in a number of pairs of species. The results obtained using these two approaches support the existence of a general compositional pattern for mammalian genomes and of a distinct pattern for Myomorpha. The other two “special” patterns identified in a megachiropteran and in pangolin could not be tested here.

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Mouchiroud, D., Bernardi, G. Compositional properties of coding sequences and mammalian phylogeny. J Mol Evol 37, 109–116 (1993). https://doi.org/10.1007/BF02407345

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