Is a highly addictive stimulant with dental damage as a telltale sign of its use; it causes users to experience serious side effects, including paranoia, and is very resistant to treatment and recovery?

Dna. we have heard that we are a product of our dna. but where is it? how do we "get" our dna? it is passed to us, from our parents, but in what form? several vocabulary words associated with inheritance are used interchangeably and sometimes, incorrectly. let's see if you can clear this up for someone just learning about inheritance and cell structure.