DNA - Wikipedia
DNA is a long polymer made from repeating units called nucleotides. The structure of DNA is dynamic along its length, being capable of coiling into tight loops, and other shapes. In all species it is composed of two helical chains, bound to each other by hydrogen bonds.Both chains are coiled round the same axis, and have the same pitch of 34 ångströms (3.4 nanometres).
DNA India | Latest News, Live Breaking News on India ...
Latest News Headlines & Live Updates - DNA India Covers all latest & breaking news on Politics, Business, Sports, Bollywood, technology & health from India & the world at Daily News & Analysis
DNA from the Beginning - An animated primer of 75 ...
Discover the concepts and experiments that define the fields of genetics and molecular biology. This animated primer features the work of over 100 scientists and researchers.
DNA Interactive: Discovering the DNA Structure and beyond
DNA Interactive is an educational web site resource that celebrates the 50th anniversary of the discovery of the DNA double helix structure.
DNA Testing for Ancestry & Genealogy | Family Tree DNA
Discover your DNA story and unlock the secrets of your ancestry and genealogy with our DNA kits for ancestry and the world’s most comprehensive DNA database.
A Science Odyssey: You Try It: DNA Workshop
An embryonic cell divides again and again. Where there was one cell there are two, then four, then eight,... Each holds all the genetic information needed to create a human being.
Have you ever wondered how scientists work with tiny molecules that they can't see? Here's your chance to try it yourself! Sort and measure DNA strands by running your own gel electrophoresis experiment ...
We’re asking for your help. For over 20 years, the Learn.Genetics website has provided engaging, multimedia educational materials at no cost. Learn.Genetics is one of the most-used science websites. Tens of millions of visitors come to our site each year to find the science and health information ...
DNA sequencing - Wikipedia
DNA sequencing is the process of determining the precise order of nucleotides within a DNA molecule. It includes any method or technology that is used to determine the order of the four bases—adenine, guanine, cytosine, and thymine—in a strand of DNA. The advent of rapid DNA sequencing methods has greatly accelerated biological and medical research and discovery.
DNA - Wikipedia, den frie encyklopædi
DNA-dobbelthelixen stabiliseres primært af to kræfter: hydrogenbindinger mellem nukleotider og basestablingsinteraktioner mellem aromatiske nukleobaser. I cellens vandige miljø tilpasser nukleobasernes konjugerede π-bindinger sig vinkelret på DNA-molekylets akse, hvilket minimerer deres interaktion med solvatiseringsskallen og derfor deres Gibbs fri energi.