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BLAST Analysis


Examine the results from a nucleotide BLAST of a gene sequence lcl2159, identified in green. Click the image to enlarge it.

Which of the following identifies the MOST closely related species to the organism from which the DNA sample was isolated?

Created for Albert.io. Copyright 2016. All rights reserved.


Crocodile species are most closely related as the gene has a more recent common ancestor.


Alligator mississippiensis, since the mitochondrial DNA is similar to the gene.


Crocodile species, since the distance tree of results shows the least distance between the gene sequence and these species.


Caiman crocodilus, since the internal branch of the cladogram is connected to this gene sequence.