Given what we know, we can confirm that the two organisms most closely related would be the human and the gorilla.
Why are the Gorilla and Human the most closely related?
Using only the information given from the diagram, we can say that gorillas and humans are the most closely related. Although the turtle and the chicken also share the same genetic similarities in the diagram, the human and the gorilla also share physical aspects between them, making them more related than the previous group.
Therefore, given that they share genetic and physical aspects, we can confirm that the two organisms most closely related would be the human and the gorilla.
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