Lewin's Essential GENES

I purchased this and it was much more affordable than the bookstore and was brand new. I am able to keep it and highlight/do all the quizzes in it as need be and keep it for reference in the future. The online code was nice, but beware half the online content can’t be accessed because they did away with adobe flashplayer, so the content isn’t supported.

Purchased for a graduate school course. I will keep this after my class is finished as it is relevant to my degree. It is well-written and professional.