In 1859, charles darwin described a model of how living things change over time. he described this model and the evidence that supported it in a book called on the origin of species. which of the following is the scientific term is used to describe a testable model that seeks to explain natural phenomena? a) data b) hypothesis c) observation d) theory

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.