title: Tetrasporic Embryo-Sac Formation in Trisomic Sectors of Maize.
abstract: Nondisjunction in mitotic divisions occurs spontaneously at a low frequency in somatic and germinal tissue in maize and results in sectors of trisomic cells. When this happens with chromosome 3 and in germinal tissue the embryo sac development is changed from the normal monosporic type to a tetrasporic type which is common in some species but not in maize.
authors.forename: M G
authors.initials: MG
authors.lastname: Neuffer