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D Question 2 1 pts Why do evolutionary biologists say that Tiktaalik roseae is a

ID: 192819 • Letter: D

Question

D Question 2 1 pts Why do evolutionary biologists say that Tiktaalik roseae is a "transitional species"? It is an extant species whose DNA sequence indicates that it is in between fish and tetrapods termediate It is an extinct species whose fossils indicate that it was a morphological intermediate between fish and tetrapods O It is an extinct species whose DNA sequence indicates that it is intermediate between fish and tetrapods. OIt is an extant species whose skeletal structure indicates that it is a morphological intermediate between fish and tetrapods

Explanation / Answer

Answer to Q2:

Transitional species are fossils or organisms that are intermediate between an ancestral form and its descendants.

Tiktaalik roseae fossils revealed that while still a fish, they resembled tetrapods.

Hence the answer is the second option which says: It is an extinct species whose fossils indicate that it was a morphological intermediate between fish and tetrapods.