I learned a lot about genetics, but I found this incredibly difficult to read. Not just because of the subject matter, but more so that every other sentence, (had a sentence in parentheses telling you to refer to another chapter to learn more about the topic that you're reading about right now). This continued all throughout the book, and was painful. That being said, like I mentioned earlier, I did learn a lot about genetics, but mostly just realized how much I truly don't know. ...so I better keep on reading.