Products related to Double helix:
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The Double Helix
The story of the most significant biological breakthrough of the century - the discovery of the structure of DNA. 'It is a strange model and embodies several unusual features.However, since DNA is an unusual substance, we are not hesitant in being bold' By elucidating the structure of DNA, the molecule underlying all life, Francis Crick and James Watson revolutionised biochemistry.At the time, Watson was only 24. His uncompromisingly honest account of those heady days lifts the lid on the real world of great scientists, with their very human faults and foibles, their petty rivalries and driving ambition.Above all, he captures the extraordinary excitement of their desperate efforts to beat their rivals at King's College to the solution to one of the great enigmas of the life sciences.
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The Double Helix
The mystery deepens and the action intensifies for 12-year-old Cruz Coronado and friends in the exciting third book in the Explorer Academy series. The adventure continues for Cruz, Emmett, Sailor, and Bryndis as they continue their studies at sea and travel to exotic locations around the world.A mysterious person alerts Cruz to impending danger while he and a few trusted pals explore ancient ruins in Petra, Jordan, and search for another piece of the puzzle his mother left behind.Worst of all, now his father has gone missing, which prompts Aunt Marisol, his #1 protector, to leave the ship in search of him.Who is the new professor who takes her place? How does the new technology he introduces help or hurt Cruz's quest?Why is Nebula determined to stop Cruz before he turns 13?The clock is ticking as his first teen birthday draws near ... a milestone that will change his life forever, one way or another.
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The Annotated And Illustrated Double Helix
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DNA Demystified : Unravelling the Double Helix
DNA, once the exclusive domain of scientists in research labs, is now the darling of popular and social media.With personal genetic testing kits in homes and GMO foods in stores, DNA is an increasingly familiar term.Unfortunately, what people know, or think they know, about DNA and genetics is often confused or incorrect.Contrary to popular belief, for instance, genes don't "skip a generation" and, no, human DNA is not "different" from DNA of other species.With popular misconceptions proliferating in the news and on the internet, how can anyone sort fact from fiction?DNA Demystified satisfies the public appetite for and curiosity about DNA and genetics.Alan McHughen, an accomplished academic and public science advocate, brings the reader up-to-speed on what we know, what we don't, and where genetic technologies are taking us.The book begins with the basic groundwork and a brief history of DNA and genetics.Chapters then cover newsworthy topics, including DNA fingerprinting, using DNA in forensic analyses, and identifying cold-case criminals.For readers intrigued by the proliferation of at-home DNA tests, the text includes fascinating explorations of genetic genealogy and family tree construction-crucial for people seeking their biological ancestry.Other chapters describe genetic engineering in medicine and pharmaceuticals, and the use of those same technologies in creating the far more controversial GMOs in food and agriculture.Throughout, the book raises provocative ethical and privacy issues arising from DNA and genetic technologies. With the author's comprehensive expertise, DNA Demystified offers an informal yet authoritative guide to the genetic marvel of DNA.
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What is a double helix?
A double helix is the structure of a DNA molecule, consisting of two long strands that wind around each other in a twisted ladder shape. The two strands are made up of a sugar-phosphate backbone and nitrogenous bases, which form the rungs of the ladder. The double helix structure allows for the genetic information encoded in the DNA to be stored and replicated accurately. This iconic structure was first described by James Watson and Francis Crick in 1953, and it has since become a symbol of the fundamental building block of life.
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What is a DNA double helix?
A DNA double helix is the twisted ladder-like structure formed by two strands of DNA. The two strands are made up of nucleotides, which are the building blocks of DNA. Each nucleotide consists of a sugar, a phosphate group, and a nitrogenous base. The nitrogenous bases from the two strands pair up with each other, forming the rungs of the ladder, with adenine pairing with thymine and guanine pairing with cytosine. The double helix structure of DNA allows it to store and transmit genetic information.
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Why does the double helix not unwind?
The double helix of DNA does not unwind because of the hydrogen bonds between the nitrogenous bases holding the two strands together. These hydrogen bonds are relatively strong and require a significant amount of energy to break. Additionally, the helical structure of DNA is stabilized by the twisting of the two strands around each other, preventing them from easily unwinding. This stability is crucial for maintaining the integrity of the genetic information stored in the DNA molecule.
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Is the alpha helix the same as the double helix in biology?
No, the alpha helix and the double helix are not the same in biology. The alpha helix is a secondary structure of proteins, where a single polypeptide chain twists into a helical shape. On the other hand, the double helix refers to the structure of DNA, where two polynucleotide strands twist around each other in a helical shape. While both structures involve helical shapes, they are different in terms of the molecules they are composed of and their biological functions.
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Double Helix History : Genetics and the Past
Double Helix History examines the interface between genetics and history in order to investigate the plausibility of ‘new’ knowledge derived from scientific methods and to reflect upon what it might mean for the practice of history. Since the mapping of the human genome in 2001, there has been an expansion in the use of genetic information for historical investigation.Geneticists are confident that this has changed the way we know the past.This book considers the practicalities and implications of this seemingly new way of understanding the human past using genetics.It provides the first sustained engagement with these so-called ‘genomic histories’.The book investigates the ways that genetic awareness and practice is seemingly changing historical practice and conceptualisation.Linking six concepts – ‘Public’, ‘Practice’, ‘Ethics’, ‘Politics’, ‘Self’, and ‘Imagination – Double Helix History outlines the ways that genetic information, being postgenomic, the public life of DNA, and the genetic historical imaginary work on the body, on collective memory, on the historical imagination, on the ethics of historical investigation, on the articulation of history, and on the collection and interpretation of data regarding the ‘past’. This book will appeal to researchers and students alike interested in DNA, genetics, and historiography.
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Broadcast Journalism : Techniques of Radio and Television News
Now in its 8th edition, Broadcast Journalism continues to be an essential text on the production of news broadcasting and the practical skills needed. It includes not only basic techniques and classic examples for the production of radio and TV news, but also new technology and the latest case studies.The fundamental skills of interviewing, news writing and production now have to cope with the prevalence of Fake News and Deep Fakes and verifying content in an endless flow of social media.This edition also includes newsgathering with mobile devices, live reporting and using data and graphics.There are dozens of new images and links for downloads and further reading, plus end-of-chapter exercises and tutor notes. This continues to be an indispensable textbook for broadcast journalism and communications students looking for an in-depth guide to the industry.
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Unravelling the Double Helix : The Lost Heroes of DNA
DNA. The double helix; the blueprint of life; and, during the early 1950s, a baffling enigma that could win a Nobel Prize.Everyone knows that James Watson and Francis Crick discovered the double helix.In fact, they clicked into place the last piece of a huge jigsaw puzzle that other researchers had assembled over decades.Researchers like Maurice Wilkins (the 'Third Man of DNA') and Rosalind Franklin, famously demonised by Watson.Not forgetting the 'lost heroes' who fought to prove that DNA is the stuff of genes, only to be airbrushed out of history.In Unravelling the Double Helix, Professor Gareth Williams sets the record straight.He tells the story of DNA in the round, from its discovery in pus-soaked bandages in 1868 to the aftermath of Watson's best-seller The Double Helix a century later.You don't need to be a scientist to enjoy this book.It's a page-turner that unfolds like a detective story, with suspense, false leads and treachery, and a fabulous cast of noble heroes and back-stabbing villains.But beware: some of the science is dreadful, and the heroes and villains may not be the ones you expect.
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John Greed Portrait Sketch Silver Double Helix Drop Earrings
Introducing the Portrait Sketch double helix drop earrings by John Greed, the perfect embodiment of elegance and modern sophistication. Meticulously crafted from premium sterling silver, these exquisite earrings from the Portrait Collection showcase the p
Price: 16.8 £ | Shipping*: 1.95 £
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How can one get a double helix piercing?
To get a double helix piercing, you should first find a reputable piercing studio or professional piercer with experience in cartilage piercings. It's important to do your research and choose a place with a good reputation for cleanliness and safety. Once you've found a studio or piercer, you can schedule an appointment to discuss the placement and jewelry options for your double helix piercing. During the appointment, the piercer will clean and mark the area for the piercings before using a sterilized needle to create the holes. Aftercare instructions will be provided to ensure proper healing.
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Is this a wild meat double helix piercing?
No, this is not a wild meat double helix piercing. The image appears to be a close-up of a piece of raw meat, possibly a steak or a cut of beef. A double helix piercing refers to two piercings on the upper ear cartilage, and has nothing to do with meat. It seems there may be a confusion or mix-up in the description of the image.
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How can one construct a DNA double helix?
To construct a DNA double helix, you would need to start with two separate strands of DNA. These strands would need to be complementary to each other, meaning that the sequence of nucleotides on one strand would match up with the sequence on the other. Then, you would need to twist the two strands around each other in a helical shape, with the sugar-phosphate backbones on the outside and the nitrogenous bases on the inside. This twisting creates the characteristic double helix structure of DNA.
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How can one build a DNA double helix?
To build a DNA double helix, you will need to start with two separate strands of DNA. These strands can be synthesized in a laboratory or extracted from a biological source. The two strands should then be aligned in an antiparallel orientation, with one running 5' to 3' and the other running 3' to 5'. Finally, the two strands should be connected by hydrogen bonds between complementary base pairs (A-T and G-C) to form the characteristic double helix structure.
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