The organic chemical DNA, the structure of DNA is a double-helix polymer, a spiral consisting of two DNA strands wound around each other. Do You know1.The only elements that are liquid at room temperature are bromine and mercury. The Nobel Prize-winning co-discoverer of the structure of DNA and author of the international bestseller The Double Helix, tells the story of the amazing molecule since its discovery 50 years ago. James Watson, the co- discoverer of the structure of DNA and author of the international bestseller THE DOUBLE HELIX, tells the story of the amazing molecule since its discovery fifty years ago, following modern genetics from his own Nobel prize- winning work in the '50's to today's Dolly the sheep, designer babies and GM foods.
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These Royal Mail stamps were affixed to specially designed envelopes and postmarked on the first day that the stamps were issued. James Watson, co-discoverer of DNA structure, gives this authoritative yet personal account of the course of modern genetic research and the technological and ethical challenges unleashed by it.

Professor Betsey Dexter Dyer examines the wide ranging field of genetics, which is the study of the hereditary information of organisms, how it is used, and how it is transferred through generations.
A scientific and medical revolution has crept up on us, based on study after study, from hundreds of laboratories around the world. Arguably the most significant scientific discovery of the new century, the mapping of the 23 pairs of chromosomes that make up the human genome raises almost as many questions as it answers - questions that will profoundly impact the way we think about disease, about longevity, and about free will. By identifying the structure of DNA, the molecule of life, Francis Crick and James Watson revolutionized biochemistry and won themselves a Nobel Prize.
In clear, concise language, Professor Young explains the basic categories of cells and tissues and then delves into their specialized functions, whether it be for muscle cells and nervous tissue or the cells of reproductive organs and the highly unusual entities known as "extreme" cells. Professor Watson introduces the science of modern genetics, along with its history and its implications, in this magnificent guide to one of the most triumphant achievements of human science. These fascinating lectures also address DNA sequences and how they apply to "genetic engineering," viruses, and genetic diseases such as cancers and birth defects. It is no longer just a theoretical shift: every one of us will be touched by it, and many of us already have been.
Finally, Professor Young wraps up the lectures with a topic of universal interest-the death and aging of cells. The nucleotide of DNA consists of a deoxyribose sugar molecule to which is attached a phosphate group and one of four nitrogenous bases: two purines (adenine and guanine) and two pyrimidines (cytosine and thymine).

And what we're continuing to learn about it every day has the potential to transform our health, our nutrition, our society, and our future. The meaning of disease, our understanding of the human body, and crucial decisions about what we all need to know and what choices we make about our health are at stake.
Matt Ridley here probes the scientific, philosophical, and moral issues arising as a result of the mapping of the genome.
His uncompromisingly honest account of the heady days of their thrilling sprint against other world-class researchers to solve one of science's greatest mysteries gives a dazzlingly clear picture of a world of brilliant scientists with great gifts, very human ambitions, and bitter rivalries.
Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). The nucleotides are joined together by covalent bonds between the phosphate of one nucleotide and the sugar of the next, forming a phosphate-sugar backbone from which the nitrogenous bases protrude. But what, exactly is DNA, the self-replicating material present in nearly all living organisms?

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