The geneticists studying the alien organisms have deciphered their genetic code.

Question

The geneticists studying the alien organisms have deciphered their genetic code. For famililarity, they have used A, C, G, and T to indicate the bases in this code A comparable genetic sequence in each ien has been identified in the genes that code for eye growth. This genetic sequence has allowed the aliens to be divided into six groups, with the single-tail, three-eye group split in half. The geneticists also studied several outgroup species (not shown) to compile a likely ancestral DNA sequence. From this information, they have constructed four possible phylogenetic trees. site 1 2 3 4 5 67 8 9 group 1 reup 2a group 2b greup 3 reup 4 ruup 5 group 1 grup 2 roup 2b groun 3 group 1 geup 3 group 2a greup 2h eup 4 uup 5 roup group b roup ancestra TCACTGCAT TCCCTGCAT group 1 group 2a group 2b group 3 group 4 roup4 T?GACTACAT aroup s group 5 phylogencic trec 1 phylhganetic trec 1 phylagenatic troe t phylogorctic troa T T G A G A G G G C CGACTGTGC group 5 Based on this genetic information, which phylogenetic tree is most parsimonious? Select the most parsimonious tree. If there is a tie, select both trees. (For help approaching this problem, open Hint 2.) ? View Available Hint(s) phylogenetic tree l phylogenetic tree lI phylogenetic tree lll phylogenetic tree IV a u

Explanation / Answer

Based on this genetic information, which phylogenetic tree is most parsimonious?
Select the most parsimonious tree. If there is a tie, select both trees:

C) Phylogenetic tree III

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