ho·mo·zy·go·sis 
(hō′mō-zī-gōsĭs, -mə-, hŏm′ə-)
(hō′mō-zī-gōsĭs, -mə-, hŏm′ə-)n.
1. Formation of a homozygote, especially by unusual means such as mitotic recombination or gene conversion.
2. The condition of being a homozygote.
ho′mo·zy·gotic (-gŏtĭk) adj.