Showing posts with label hair color. Show all posts
Showing posts with label hair color. Show all posts

Tuesday, May 11, 2010

Painting with Eumelanin, or the Battle for Follicular Supremacy


I thought Megan and I were locked in a viscous combat in a war whose winner was pre-ordained, but unknowable.  
False.


Turns out the Battle for Follicular Supremacy isn't a battle at all.  It's more like two painters with different amounts of paint and a shared (and adorable) vision.  


Megan and I each contributed a number of genes to Milo's head.  The rest of him too.  I've always pictured simple-Mendelian inheritance, with a dominant and recessive hair color gene.  He'd have gorgeous strawberry-blond hair, or he'd have my hair.  Turns out we each contributed a bunch of chromosomes that lead to the production of a pigment called eumelanin.  The more genes he has  that make this pigment, the darker Milo's hair will be.  The fewer, the lighter.  It's not a dominant/recessive, either/or, win/lose thing.  (I'm not going to say which of our hair colors would have been a win)  It's the cooperation of our genes which will end up coloring in Milo's hair.  

So he may end up looking something like this:
Cut your hair, hippie

Or something like this:

No, wait, grow it back.  You look like Vanilla Ice


Maybe some of each or none of the above.  You'll be the first to know once I know what our little artists come up with.