The Question Refers to the Following Table, Which Compares the Percent

question 41

Multiple Choice

The question refers to the following table, which compares the percent sequence homology of four different parts (two introns and two exons) of a gene that is found in five different eukaryotic species. Each part is numbered to indicate its distance from the promoter (for example, Intron I is the one closest to the promoter) . The data reported for species A were obtained by comparing DNA from one member of species A to another member of species A.
% Sequence Homology
$$\begin{array} { | l | l | l | l | l |} \hline \text { Species } & \text { Intron I } & \text { Exon I } & \text { Intron VI } & \text { Exon V } \\\hline A & 100 \% & 100 \% & 100 \% & 100 \% \\\hline B & 98 \% & 99 \% & 82 \% & 96 \% \\\hline C& 98 \% & 99 \% & 89 \% & 96 \% \\\hline D & 99 \% & 99 \% & 92 \% & 97 \% \\\hline E & 98 \% & 99 \% & 80 \% & 94 \% \\\hline\end{array}$$
-Based on the tabular data, and assuming that time advances vertically, which phylogenetic tree is the most likely depiction of the evolutionary relationships among these five species?

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