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Genetics presents the basic facts and concepts with enough depth of knowledge to stimulate students to move on to more cutting-edge aspects of the subject. It covers contemporary genetics, and helps students understand the essentials of genetics, teaching them how to analyze data, and how to draw their own conclusions. Genetics is the study of heredity. Heredity is a biological process where a parent passes certain genes onto their children or offspring. The genetic information lies within the cell nucleus of each living cell in the body. The genes lie within the chromosomes. At one point along their length, each chromosome has a constriction, called the centromere.