Definition: Univalvular, in the context of biology and medicine, refers to a type of cell that has only one set of chromosomes. This means that cells have two sets of genetic material (a set of chromosomes) but only one copy of each chromosome. In other words, a univalve cell does not contain any extra copies or segments of DNA within its nucleus, as it has only one set of chromosomes. Cells with this type of structure are called unicellular organisms and are found in