The strands of the DNA double helix are held together by hydrogen bonding interactions between the complementary base pairs. Heating DNA in solution easily breaks these hydrogen bonds, allowing the two strands to separate - a process called denaturation or melting.

Each year, several million children either die or suffer irreparable developmental defects because of vitamin A deficiency. Countless others are harmed by malnutrition and starvation. Yet many of these deaths would be preventable if we addressed them head on and used the tools that exist to stop them.

There is need for more science in politics and less politics in science.

Richard J. Roberts Quotes