A Brief History of the Discovery of DNA

By: Myles Power Edited by: Hannah

In 1953, using x-ray diffraction data collected by Rosalind FranklinJames D. Watsonand Francis Crick proposed the double helix structure of deoxyribonucleic acid (DNA). Their paper, “Molecular Structure of Nucleic Acids: A Structure of Deoxyribonucleic Acid”, proposed a simple and elegant solution to the then unknown chemical structure of DNA. It also provided an insight into how genetic instructions are stored inside organisms and passed from one generation to the next. This discovery was the end of a story that began a century earlier with an unknown 25-year-old Swiss physician, named Johannes Friedrich Miescher.

In 1868, working at the University of Tübingen, Miescher performed experiments on the chemical composition of leukocytes, using puss from discarded surgical bandages. He discovered a new type of cellular material that was not a protein and contained large amounts of phosphorous. Since he had isolated it from the cell nuclei, he named it nuclein (now nucleic acids). He discovered that this substance was not only found in puss cells, but in cells from yeasts, liver and kidney, and then went on to prove that nucleic acids were a characteristic component of all cell nuclei.

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Strawberry DNA Extraction – DIY Experiments

Abstract

In this experiment you will extract DNA from the cells of strawberries using a home made extraction kit. The experiment is perfect for any young scientist and introduces the concept of DNA extraction with in-depth explanation of the hands-on scientific procedure. All materials and equipment are inexpensive, easy to find and safe to use at home.

        

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Myles vs Randall Niles – Abiogenesis

Life from a rock eh? Randall Niles co-founder, operations director and CFO of All About God Ministries seems to think so. According to one of the “All About God” affiliated websites, Randall Niles spent nearly 20 years as a “practicing atheist” before finding God. He now makes youtube videos and feels he has the scientific knowledge to talk about abiogenesis. As you can imagine he gets it all wrong, Myles discusses the problems with his arguments.

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