It is important because when you need it it will be there. If you don't have it and you need it then you would have to look it up and heavan forbid you don't have internet. So it is very important to keep it in a place were you will see it every day Like your refrigerator door.
The DNA would have many more mutations when it was done being replicated. The different DNA would eventually contradict each other and cause problems.
helps to gain information and communicate with each other
