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.
-Detection of which of the following types of substitutions requires knowing the sequence of intermediates between the common ancestor and the descendant colonies, in addition to that of the two colonies and the common ancestor?

A) Coincident substitutions
B) Back substitutions
C) Multiple substitutions
D) Both a and b
E) Both b and c

Correct Answer:

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