Genetics, as you've probably heard, is a field of study that's likely going to play a very big part in society's near future. It's also a tough branch of science to grasp. What's the difference between DNA, a gene, a chromosome and a genome? How much of a role does genetics play in your health - is DNA destiny?
This book is a solid introduction to understanding genetics: the basics of the science, the history of humanity's knowledge of it, how it relates to other fields (ie evolution) - all explained well, in both word and the highly helpful illustrations. As always, Gonick tosses in some humor with his cartoons, but don't be fooled into thinking this is kid stuff. He delves into serious science. (And I noted with great amusement that one reviewer who hated the book was a big fan of the "for dummies" series. Irony much?)
I liked this book a lot - not quite as good as The Cartoon Guide to Physics, and bear in mind that current advances in genetics may well render parts of the book outdated soon... but it's still well worth reading.