#### Question

Use the following paragraph and the chart to answer the question. Cytochrome c is a small protein that takes part in cellular respiration. The table compares the cytochrome c of various organisms to that of chimpanzees.

$\begin{matrix} \text{Organism} & \text{Number of Amino Acids That are Different From Chimpanzee Cytochrome C}\\ \text{Dog} & \text{10}\\ \text{Moth} & \text{24}\\ \text{Penguin} & \text{11}\\\text{Yeast} & \text{38}\\ \end{matrix}$

How can you interpret the data in the chart to draw a conclusion about the evolutionary relationships among the species?

#### Solution

Verified

Dogs and penguins have the least numbers of cytochrome c that are different from the chimpanzees. The reason for this is because dogs, penguins, and chimpanzees are vertebrates. They all share some similar structures since they are related in terms of their evolutionary relationship. On the other hand, moths are classified as insects and yeast is classified as fungi. They have simpler features and structures when compared to vertebrates, which are more complex organisms. This is the reason why there were huge differences between them and chimpanzees at a molecular level.

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