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A portion of the amino acid sequence of an enzyme from a worm is shown below:


Analyze the same portion of the same enzyme taken from several other organisms. Place them in order from most closely related to the worm to most distantly related to the worm.

-Q-R-Q-N-S-S-C-C- organism X

-Q-Q-Q-N-N-S-C-C- organism Y

-Q-Q-R-N-S-N-C-C- organism Z
A. Z, Y, X
B. Y, Z, X
C. X, Z, Y
D. Y, X, Z

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