This video gives information regarding abnormalities that can occur in both chromosomal number and structure and the various conditions that can develop from these abnormalities. 00:00 Introduction 00:57 Alteration in Chromosome Number 01:24 Nondisjunction 02:45 Aneuploidy 03:40 Genetic Disorders 04:00 Polyploidy 05:18 Alteration in Chromosome Structure 05:48 Types