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) .
-The additional segment in species B and E is most likely associated with which process?

A) Changes in the timing of gene expression
B) Changes in the location of gene expression
C) Phenotypic plasticity
D) Both a and c
E) Both b and c

Correct Answer:

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