Use the Following to Answer Questions

Use the following to answer questions:
In a hypothetical experiment, researchers split a bacterial colony in two, allowing each of the new colonies to evolve separately. They then sequenced a gene from colony 1 and colony 2.
-In the common ancestor, the nucleotide at site 327 is G. In colony 1, it changes to C; in colony 2, it also changes to C. This is an example of a _______ substitution.

A) single
B) coincident
C) parallel
D) back
E) multiple

Correct Answer:

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