If you're a crayfish, North Carolina is where it's at. In general, the state is among the most biologically-diverse for several reasons. Additionally, there are a couple of thoughts as to why we live in the Mudbug Mecca. In a way, crayfish are islands unto themselves. Most species carry with them Branchiobdellida, a species of worm that live life on the clawed critter.
You are you because of a unique combination of your parents' genes, coded into the strands of DNA molecules, coiled tightly around an “X-shaped” structure. This is a chromosome, and you have 23 pairs of them, deep down in the nucleus of all 37 trillion cells in your body.
Dr. Beth Sullivan, Associate Professor of Molecular Genetics and Microbiology at Duke University, studies chromosome rearrangements in her lab and how they may cause disease.
