Ciliated neuroepithelial cells
If your in alaska and do this experiment the weather conditions may affect the test results. if you go to australia the same can happen. there are many factors and variables in which an experiment can have different results.
It's something to do with the fact that having sickle cell anaemia reduces the chances of contracting malaria, obviously a very common disease in Africa. I'm not quite sure what the link is but hopefully this helps a little bit?
Answer: Nondisjunction means that a pair of homologous chromosomes has failed to separate or segregate at anaphase so that both chromosomes of the pair pass to the same daughter cell. This probably occurs most commonly in meiosis, but it may occur in mitosis to produce a mosaic individual.
I honestly have no clue sorry