Use the Following to Answer Questions

Use the following to answer questions :
The diagram below shows the association of phenotype and gene expression patterns in five different species. The top portion shows the phylogeny of the five species; below the phylogeny are the phenotypes of the five species; and at the bottom are the expression patterns for three different genes (genes 1, 2, and 3) at two different time points in development (early and late) , and in two different locations in the embryo (top and bottom) .
-Which gene's expression is associated with the additional segment seen in species B and E?

A) Gene 1
B) Gene 2
C) Gene 3
D) Both gene 1 and gene 2
E) Both gene 2 and gene 3

Correct Answer:

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