give 2 example of what might happen when nondisjunction occurs?

Answer 1

down's syndrome if chromosome 21 failed to segregate

turner syndrome in females if in female parent, x- chromosomes fail to segregate and the one without x-chr forms the zygote. the sufferer has 44+XO chr .

Answer 2

"Nondisjunction is the failure of the chromosomes to properly segregate during meiotic or mitotic anaphase, resulting in daughter cells with abnormal numbers of chromosomes. Nondisjunctions can result in diseases or abnormalities, and occasionally aid in adaptation and speciation." See wikipedia for specific examples.