A small region of a protein from three species is sequenced and found to be as follows: Species X is alanine, glycine, glycine, threonine, alanine.
Species Y is alanine, glycine, threonine, alanine.
Species Z is alanine, valine, glycine, threonine, alanine.
The difference in the amino acid sequence of species Y is most likely due to a(n) ____.
A)inversion
B)deletion
C)gene duplication
D)translocation
E)addition

Question

A small region of a protein from three species is sequenced and found to be as follows: Species X is alanine, glycine, glycine, threonine, alanine.
Species Y is alanine, glycine, threonine, alanine.
Species Z is alanine, valine, glycine, threonine, alanine.
The difference in the amino acid sequence of species Y is most likely due to a(n) ____.​
A)​inversion
B)​deletion
C)​gene duplication
D)​translocation
E)​addition

Quizplus · Accepted Answer

The amino acid sequence in species Y is missing a glycine compared to species X and Z. This indicates a deletion mutation in the sequence of species Y.

A Small Region of a Protein from Three Species Is