Honestly, the genetics covered on the MCAT is very shallow.. dihybrid crosses, test crosses, basic linkage, co-dominance, etc. I think you could easily learn all the topics off of google / mcat-review / Khan rather than buying a book solely for one small portion of BS.
That being said, if you are still planning on buying a book, definitely don't get EK. I'm so glad I took a genetics class, because EK barely touches it.
