Abstract: The invention relates to a method for generating a gene mosaic by somatic in vivo recombination, comprising: e) in a single step procedure (vii) transforming a cell with at least one gene A having a sequence homology of less than 99.5% to another gene to be recombined that is an integral part of the cell genome or presented in the framework of a genetic construct, (viii) recombining said genes, (ix) generating a gene mosaic of the genes at an integration site of a target genome, wherein said at least one gene A has a single flanking target sequence either at the 5? end or 3? end anchoring to the 5? or 3? end of said integration site, and f) selecting clones comprising the gene mosaic, as well as a method of producing a diversity of gene mosaics and gene assembly.

Abstract: The invention relates to a method for generating a gene mosaic by somatic in vivo recombination, comprising a) in a single step procedure (i) transforming a cell with at least one gene A having a sequence homology of less than 99.5% to another gene to be recombined that is an integral part of the cell genome or presented in the framework of a genetic construct, (ii) recombining said genes, (iii) generating a gene mosaic of the genes at an integration site of a target genome, wherein said at least one gene A has a single flanking target sequence either at the 5? end or 3? end anchoring to the 5? or 3? end of said integration site, and b) selecting clones comprising the gene mosaic, wherein said cell is a eukaryotic strain with a knock-out of at least one DNA repair gene. The invention further refers to a method of producing a diversity of gene mosaics and gene assembly.

Abstract: The invention relates to a method for metabolic evolution of a variant of a natural small aromatic molecule product of a metabolic pathway, by somatic in vivo assembly and recombination of said metabolic pathway employing a gene mosaic of at least one gene A, which comprises a) in a single step procedure (i) transforming a cell with at least one gene A having a sequence homology of less than 99.

Abstract: The invention relates to a method for generating a gene mosaic by somatic in vivo recombination, comprising: e) in a single step procedure (vii) transforming a cell with at least one gene A having a sequence homology of less than 99.5% to another gene to be recombined that is an integral part of the cell genome or presented in the framework of a genetic construct, (viii) recombining said genes, (ix) generating a gene mosaic of the genes at an integration site of a target genome, wherein said at least one gene A has a single flanking target sequence either at the 5? end or 3? end anchoring to the 5? or 3? end of said integration site, and f) selecting clones comprising the gene mosaic, as well as a method of producing a diversity of gene mosaics and gene assembly.

Abstract: In vivo methods for generating and detecting recombinant DNA sequences in bacteriophages or plasmids containing bacteriophage sequences, methods for generating hybrid genes and hybrid proteins encoded by these hybrid genes by the use of bacteriophages and plasmids containing bacteriophage sequences, bacteriophages and plasmids that can be used in these methods, and kits comprising appropriate bacterial host cells and bacteriophages or plasmids are described.