What would be the consequence of the resulting gametes if each of the following occurred? (discuss the consequence for all four gametes produced).
a. nondisjunction (lack of separation) of one homologous pair in meiosis i
b. crossing over does not complete – the breakage of the two sister chromatids occurs, but they are not joined to the opposite chromosome.
c. synapse does not occur between the sex chromosomes, so each replicated sex chromosome lines up individually in meiosis i.