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Which change to a DNA molecule would have the least effect on an organism? an addition to a base sequence at the beginning of a gene a deletion from a base sequence in the middle of a gene a substitution in a base sequence that does not code for a protein a substitution that creates a “stop” code in the middle of a gene

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Answer:

Change in a single nitrogen base in the DNA sequence will not have any significant effect on the organism.

So A: an addition to a base sequence at the beginning of a gene

Explanation:

This is known as point mutation and it does not have any significant change in the protein and it is least harmful type of DNA mutation.

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