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The synthesis of protein begins with the DNA molecule. Found in the nucleus of all cells, DNA molecules are grouped in complex structures called chromosomes. The two outer rails of a DNA molecule are coiled in a double helix: between these two rails, two kinds of molecules link to form endless possible sequences. The order of these sequences constitutes the genetic code for the construction of protein. (Spanish, 10 minutes)



 

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Copyright date: ©1984




     


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