Given the following sequence of genes on a chromosome, determine what change in chromosome structure occurred. (the * indicates the centromere) before A B C D * E F G H
After A B G F E * D C H
A) Reciprocal translocation
B) Pericentric inversion
C) Paracentric inversion
D) Gene duplication
E) None of the answers are correct

Question

Quizplus · Accepted Answer

The sequence change from "A B C D * E F G H" to "A B G F E * D C H" indicates a pericentric inversion, as the order of genes is reversed across the centromere (from E F G to G F E and from C D to D C).

Given the Following Sequence of Genes on a Chromosome, Determine