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DNA (Deoxyribonucleic Acid). Watson and Crick DNA Molecules x8b8Ihttp://www.youtube.com/watch?v=V9BZ3z x8b8I.

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Presentation on theme: "DNA (Deoxyribonucleic Acid). Watson and Crick DNA Molecules x8b8Ihttp://www.youtube.com/watch?v=V9BZ3z x8b8I."— Presentation transcript:

1 DNA (Deoxyribonucleic Acid)

2 Watson and Crick

3 DNA Molecules http://www.youtube.com/watch?v=V9BZ3z x8b8Ihttp://www.youtube.com/watch?v=V9BZ3z x8b8I

4 Structure of DNA Deoxyribonucleic Acid DNA is one of the two nucleic acids –DNA –RNA It is composed of repeating subunits (monomers) called NUCLEOTIDES. A nucleotide has three components –– deoxyribose (sugar) –A phosphate –A nitrogenous base

5 Nitrogenous Bases Adenine (A) Guanine (G) Cytosine (C) Thymine (T)

6 The Double Helix A always pairs with T C always pairs with G

7 Hip Hip Horay for DNA http://www.youtube.c om/watch?v=FUA6 _Ucw3i4 http://www.youtube.com/watch?v=ckZ Eds5taX4http://www.youtube.com/watch?v=ckZ Eds5taX4


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