Abstract: A transgenic seed or plant of a corn, cotton, rapeseed or soybean species having a recombinant chromosome with multiple transgenes for imparting traits to said seed or its plant. Useful traits include herbicide tolerance, insect resistance, nematode resistance, viral resistance, tolerance to water deficit, tolerance to nitrogen deficit, enhanced amino acid level in seed, enhanced starch level in seed, enhanced oil level in seed, modified oil composition, and increased yield. Useful recombinant chromosomes are produced with centromere DNA from the plant targeted for transformation or from truncated native chromosomes.

Abstract: The present invention relates to a corn plant and seed with enhanced levels of protein and amino acids. The invention also relates to DNA constructs that provide expression in transgenic corn cells of an asparagine synthetase enzyme. The DNA constructs are used in a method to produce transgenic corn plants and seeds and to select for plants and seeds with enhanced levels of protein and amino acids.