(1) In these cases, molecular analysis was performed on only four members of the octad .(2) After meiosis, the four meiotic products undergo an additional mitotic division to yield eight haploid nuclei, which differentiate into an octad of eight ascospores.(3) In this case, the first postmeiotic cells deriving from the spores have been separated to yield octads composed of four pairs of colonies deriving from a single meiosis.