If meiosis does not occur properly, an egg or sperm could end up with too many chromosomes, or not enough chromosomes. Upon fertilization, the baby could then receive an extra chromosome (called a trisomy), or have a missing chromosome (called a monosomy).
It is Possible to Save Money on Airline Tickets. There are some time-proven axioms that you can follow to put the odds on your side in helping you save money on airline tickets. If you want to save money on airfare, don't be rigid on the time of day you want to travel.
Most airlines sell return tickets at a cheaper price for international flights. You can shop around, often you can buy open return tickets or tickets you can change with little or no penalty. I know the feeling of just going, but if you don't have a lot of money planning ahead can save you heaps.