Tetradplugin-autotooltip__default plugin-autotooltip_bigTetrad: In the context of yeast genetics, a tetrad refers to the four ascospores from a single ascus, which represents the four products of a single meiotic event. In the context of meiosis in general, a tetrad refers to the four chromatids from a set of replicated homologous chromosomes lined up at metaphase I. analysis: an experimental method to analysis meiosisplugin-autotooltip__default plugin-autotooltip_bigMeiosis: a process involving two sequential cell divisions that usually produces four gametes (reproductive cells such as sperm or eggs). in yeasts and other fungi. See Appendix A.