Genome analysis shows that large-scale gene duplications have occurred in fungi, animals and plants, creating genomic regions that show similarity in gene content and order. However, the high frequency of gene loss reduces colinearity resulting in duplicated regions that, in the extreme, no longer share homologous genes. Here, we show that by comparison with an appropriate second genome, such p...

In this paper we give the expression of the multiple corrélation coefficient in a linear model according to the coefficients of corrélation. This expression makes it possible to analyze from a numerical point ofview the instability of estimâtes in the case of collinear explanatory variables in the linear model or in the autoregressive model. This numerical approach, thaï we show on two examples...

Their small sizes have meant that the Arabidopsis and rice genomes are the best-studied of all plant genomes. Although even closely related plant species can show large variations in genome size, extensive genome colinearity has been established at the genetic level and recently also at the gene level. This allows the transfer of information and resources assembled for rice and Arabidopsis to b...

In the late 1950s, much thought and research were focused on deciphering the genetic code, determining how proteins are synthesized, and explaining how genetic information is translated into proteins. Whether or not the linear nucleotide sequence of a gene corresponds to the linear amino acid sequence of a polypeptide, “colinearity” was of major concern. But how could this relationship be exami...