I found this book in a book sale at Christmas at the school (GSIS). The author's tone is that of a late teenage boy or college student with regular allusions to "sex" (get it genetics and sex? anyway ...) but the content is still valuable and well presented. If you understand a lot of it you will snicker at the occasional science jokes (usually in the graphics).
The writing and content is sufficiently valuable (and morally benign) that I plan to use it with my grade 11 IB-DP Biology students this semester. I am sure they will enjoy it and it will present the technical information in a way that is just plain funner to read.
I think I could get hooked on graphic novels! It brings back childhood memories of cowboy comic books.