Haploid		The process of union of two gametes whereby the diploid chromosome number (2n) is restored and the development of a new individual is intiated.
Zygote		An interchange of genes or segments between homologous chromosomes, also called synapsis
Diploid		A specialized cell involved in sexual reproduction
Tetrad		A cell formed by the union of two gametes
Spermatogenesis		Term used to refer to chromosome that each have a corresponding chromosome for the opposite- sex parent
Fertilization		The formation of an egg cell
Crossing Over		A structure containing 4 chromatids that forms during meiosis
Gamete		The cellular process that results int he number of chromosome in gamete- producing cells being reduced to one half and that involves a reduction division in which one of each pair of homologous chromosomes passes to each daugter cell.
Conjugation		Term used to refer to a cell that contains one half of a set of homologous chromosomes (n)
Meiosis		Formation of a sperm cell
Oogenesis		Fusion of usually similar gametes with ultimate union of their nuclei.
Homologous		Term used to refer to a cell that contains both sets of homologous chromosomes (2n)