Chances are you've seen an illustration of DNA's double-helix structure and even pictures of the chromosomes that comprise the human genome. But where and how does the famous double helix fit into ...

Genes are the blueprints of life. Genes control everything from hair color to blood sugar by telling cells which proteins to make, how much, when, and where. Genes exist in most cells. Inside a ...

What do a human, a rose, and a bacterium have in common ... Franklin used a process called X-ray diffraction to capture images of DNA molecules (Figure 5). Although the black lines in these ...

The study identified a drastic bottleneck, in which only seven to ten of the mother's thousands of copies of mitochondrial DNA get passed on to each child. Because of the timing of the bottleneck ...