genetic structure is one of the most interesting things known to
mankind. We have studied thoroughly throughout history, and we
still don't know everything. Genetics are what make us what we
are. Without DNA, we could not be the people that we are now.
Through genetics, we inherit things from our parents, whether it actually shows on their body or not (e.g., your parents may both have brown eyes, but you may have blue). The way this happens is because of genes, which we INHERIT from our parents.
However, with all these things that make us who we are, there are some disadvantages. There are many disorders from things gone wrong with the gametes, also known as the sex cells. There are lots of DISORDERS in the world that many people have experienced, and that we have studied.