SAT Subject Biology Practice Question 30: Answer and Explanation

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Question: 30

4. The diagram shown compares a normal chromosome with one that has undergone a rearrangement. The rearrangement is BEST described as a/an

A. deletion
B. duplication
C. nondisjunction
D. inversion
E. translocation

Correct Answer: D


The diagram shows that one section of the chromosome has been flipped or inverted. This type of chromosomal mutation is an inversion.

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