Potentially Infectious Biomedical Waste includes, but is not limited to the following: 1  Cultures and stocks of infectious agents and associated biologicals, including cultures from medical and pathological laboratories, from research and industrial laboratories.
1 (biology) During meiosis, the separation of chromosomes (homologous in meiosis I, and sister chromatids in meiosis II). ( 2 in mathematics): conjunction. ( 3 in mathematics): logical connective. ( in logic): inclusive disjunction.
  Nondisjunction is the failure of chromosomes to separate properly during cell division (both mitosis and meiosis). Crossing over, on the other hand, is the exchange of g â¦ enetic material between homologous chromosomes during meiosis.