document.write( "Question 1177157: DNA (deoxyribonucleic acid) is made from a sequence of four nucleotides (A, T, G, or C).
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Algebra.Com's Answer #805435 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "It is the same as to ask \r\n" );
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document.write( "    How many words of the length 40 can be made using 4 letters A, T, G or C.\r\n" );
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document.write( "We have 4 independent opportunities in every of 40 positions,\r\n" );
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document.write( "so the answer is   =   possible nucleotide sequences.\r\n" );
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