Genetics, DNA, and Heredity

Genetics, DNA, and Heredity

A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. … Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the...
The New Genetics

The New Genetics

The New Genetics is a science education booklet that explains the role of genes in health and disease, the basics of DNA and its molecular cousin RNA, and new directions in genetic research.
Understanding Genetics

Understanding Genetics

Let’s take a closer look inside chromosomes, where you’ll find DNA. You can think of DNA as the instruction manual for your body. It is made of 4 chemical building blocks: Adenine (usually referred to as just “A”) Cytosine (or “C”) Guanine (or “G”) Thymine (or “T”)...
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