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).
AncestryDNA™ | DNA Tests for Ethnicity & Genealogy DNA Test
AncestryDNA™ is the newest DNA test which helps you find genetic relatives and expand your genealogy research. Order your DNA test kit today.
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 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.
DNA repair - Wikipedia
DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome.In human cells, both normal metabolic activities and environmental factors such as radiation can cause DNA damage, resulting in as many as 1 million individual molecular lesions per cell per day. Many of these lesions cause structural damage to the DNA molecule and ...
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NOVA - Official Website | Create a DNA Fingerprint
DNA. It's what makes you unique. Unless you have an identical twin, your DNA is different from that of every other person in the world. And that's what makes DNA fingerprinting possible. Experts ...
How To Extract DNA From Anything Living - Learn.Genetics
First, you need to find something that contains DNA. Since DNA is the blueprint for life, everything living contains DNA. For this experiment, we like to use green split peas. But there are lots of other DNA sources too, such as: Pour your thin pea-cell soup through a strainer into another container ...