Final answer:
The order of nucleotides in a DNA molecule regulates the types of enzymes produced in a cell.
Step-by-step explanation:
The feature of DNA that regulates the types of enzymes produced in a cell is the order of the nucleotides in a DNA molecule. The sequence of nucleotides, which are represented by the four DNA bases (adenine, thymine, cytosine, and guanine), contains the instructions for building proteins. Different combinations of nucleotides code for different amino acids, which ultimately determine the type of enzymes produced.
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