scientists have been able to reconstruct DNA sequences in an ancestral Archosaur
ID: 88496 • Letter: S
Question
scientists have been able to reconstruct DNA sequences in an ancestral Archosaur to produce an opsin protein. knowledge of the opsin sequence in the ancestral Archosaur provides clues about the animals' visual capabilities and probable behaviors.which of the following is not a true conclusion based on their results?
select one:
a) the ancient Archosaur was probably nocturnal
b) the ancestral state for this protein could not be recreated
c)phylogenetic analysis allowed scientists to predict the changes in opsin
d) the opsin protein of the Archosaur was shifted to the red end of the spectrum
e) phylogenetic analyses can be used to reconstruct extinct species.
Explanation / Answer
Option e is not a true conclusion. All the other choices match the experimental analysis. The Rhodopsin reconstructed from Archosaur showed dim light vision, the protein was recreated and assayed.But the phylogenetic analyses cannot be used to reconstruct the extinct species,it can be only used to observe the evolutionary changes in opsin.
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