This is definitely a great introduction to genetics. It covers every aspect in this field such as the Mendel's Rules, why we have different blood types, Punnet tables, dominant and recessive genes, the role of mutations, the production of proteins using bacteria and genetically modified animals that are proteins factories for Human use, such as insuline, and much more. I thought I had a decent knowledge of genetics but now I feel more confident about it and this book really provide the right knowledge to be up-to-date in this fascinating and complex topic.