The term "haploid" is an adjective used to qualify a cell
that contains a single set of unmatched chromosomes, called "n chromosomes". These are found in organisms made up of cells
containing a nucleus, such as in the animal, vegetable, fungi, and protist kingdoms. The human body
experiences a haploid stage at the time when gametes, the spermatozoa and ovocytes, are forming. The cells then become diploid and contain matched pairs of chromosomes ("2n chromosomes").