"Much of what makes you who you are, what makes you human," started Mohinder, pausing to pick out something from the box of fruits on his desk. "And this banana a banana is hard coded in your DNA."
"It's not always as simple as picking out a single gene. That that one gave me brown eyes, one made her left handed and another gave him an allergic reaction to pineapple. For eye colour, brown is generally dominant over blue; black, red and violet are rare but possible variations, with at least six genes known to affect the shade you see in the mirror."
"Deoxyribonucleic acid is made of sequences matched pairs of nucleotides," he said, handing out
notes. "It uncoils from it's helix into RNA, coding amino acids which form proteins which make up each of your cells. If there's a mutation, something going wrong can result in serious, even lethal medical problems."
Mohinder started setting up what looked mostly like an
over-complicated blender. "DNA extraction is fairly simple," he said, picking up a swab. "Whether from yourselves or from fruit or vegetable. You all have instructions, so you can try your own extraction process."
[OCD has landed!]