The bread wheat (Triticum aestivum) was one of the last of the large international cereal crops to be sequenced owing to its allohexaploid genome with a very high content of repetitive DNA. Based on an approach to sequence each of the 21 chromosomes individually, the International Wheat Genome Sequencing Consortium (IWGSC http://www.wheatgenome.org ) published the first sequence separating the sequence from the individual homeologous chromosomes from the A,B and the D genomes. Our Norwegian contribution was the sequence of chromosome 7B, as well as technology development for the whole genome project. We subsequenclty utilized the resource developed via this effort to elucidate the evolutionary history of bread wheat as well as to give the first account of the cell and homeologue specific account of the developing bread endosperm (see above). Our current effort is directed at studying the effect of genotype and environment on the bread wheat endosperm transcriptome. In addition, we are working to assist the Graminor breeding company to implement genome marker technology to their commercial wheat breeding program.