The Following Questions Refer to the Information Below -Which Statement Represents the Best Explanation for the Observation That

question 26

Multiple Choice

The following questions refer to the information below.
A researcher compared the nucleotide sequences of a homologous gene from five different species of mammals with the homologous human gene. The sequence homology between each species' version of the gene and the human gene is presented as a percentage of similarity.
$$\begin{array} { l c } \text { Species } & \text { Percentage } \\\hline \text { Chimpanzee } & 99.7 \\\text { Orangutan } & 98.6 \\\text { Baboon } & 97.2 \\\text { Rhesus Monkey } & 96.9 \\\text { Rabbit } & 93.7\end{array}$$

-Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of homology?

• A)Dogs and wolves have very similar morphologies.
• B)Dogs and wolves belong to the same order.
• C)Dogs and wolves are both members of the order Carnivora.
• D)Dogs and wolves shared a common ancestor very recently.
• E)Convergent evolution has occurred.

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