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This is a calculation molecular biology problem that enables you to convert daltons (molecular mass) to protein sizes and to the number of genes.

Assume that the DNA of a certain bacteriophage contains 2 x 105 base pairs. How many genes does this number of base pairs correspond to? (The average protein is about 40,000 daltons)

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First, you need to know that the molecular masses of amino acids may vary, but they average 100 daltons. That ...