In lines 17 to 18 the text says that “Scientists, including ...

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Q3581498 Inglês
Another rare spotless giraffe found — the first ever seen in the wild





(Available at: https://www.nationalgeographic.com/animals/article/spotless-giraffe-found-in-the-wild-for-thefirst-time – text especially adapted for this test).
In lines 17 to 18 the text says that “Scientists, including Ferguson, believe the solid coloring is likely due to one or more genetic mutations that haven’t yet been identified”. The use of the present perfect tense with the word “yet” suggests that:
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