How many different DNA molecules that are eight-nucleotide pairs long are theoretically possible?

Name: How many different DNA molecules that are eight-nucleotide pairs long are theoretically possible?
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Each position in the DNA molecule can be occupied by one of four nucleotides (adenine, thymine, cytosine, or guanine). Since there are eight positions and each position can be one of four possibilities, the total number of different DNA molecules is 4^8 = 65,536.

How Many Different DNA Molecules That Are Eight-Nucleotide Pairs Long