WWW.GOODNEWS.WS DNA Structure
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Genetics & The structure of DNA — PART 1
Enjoy — this clip is from BBC AS Guru — now no longer in existence. Genetics & DNA Oh do write a comment,please and vote 
************DISCLAIMER***************** This movie is uploaded (like all others — unless specified) for the sole purpose of education and not for profits. It is designed to help mostly A-level students in their biological science studies. No copyright infringement intended. *****************************
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Genetics & The structure of DNA — PART 2
Genetics & The structure of DNA — PART 2 Enjoy — this clip is from BBC AS Guru — now no longer in existence. What is genetics and DNA? ***********DISCLAIMER*************** This movie is uploaded (like all others — unless specified) for the sole purpose of education and not for profits. It is designed to help mostly A-level students in their biological science studies. No copyright infringement intended. *****************************************
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DNA Structure
a negative charge, making the entire DNA backbone highly charged and polar. A cyclic base is attached to each sugar. The bases are planar and extend out perpendicular to the path of the backbone. Pyrimidine bases are composed of one ring and purine bases of two rings. Adjacent bases are aligned so that their planar rings stack on top of one another. Base stacking contributes significantly to the stability of the double helix. In a double helix, each base on one strand is paired to a base on …
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