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What is the complementary strand for the DNA strand  ATTCGGACTA?    

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The letters A, T, C and G represent the nucleotides or nitrogenous bases that make up a strand of DNA:

A = adenine

T = thymine

C = cytosine

G = guanine

Adenine and guanine are a class of molecules called purines and cytosine and thymine are in a class called pyrimidines. Adenine pairs with thymine and cytosine pairs with guanine.  The two opposite DNA strands...

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