How many neutrons does an atom of
Rubidium have in its nucleus?

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.

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Why has two different alleles for the same trait?