Food is able to move down your esophagus by a wave of relaxing and contracting. this is called?

As a small change in a person's dna can cause a genetic disorder

Which food could be transported in a galvanized metal container?

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.