A wild-type chromosome can be represented as ABC[*]DEFGH,and from this a chromosomal aberration arises that can be represented ABC[*]DEGFH,where [*] represents the centromere.This aberration is known as a:
A)deletion.
B)duplication.
C)paracentric inversion.
D)pericentric inversion.
E)translocation.

Question

Quizplus · Accepted Answer

The chromosomal aberration represented by ABC[*]DEGFH is a paracentric inversion, which occurs when a segment of the chromosome is flipped in orientation, but the centromere remains in the same position. In this case, the segment between F and H has been inverted. A deletion involves the loss of a segment of chromosome, a duplication involves the presence of an extra segment, a pericentric inversion involves the centromere being within the inverted segment, and a translocation involves the exchange of segments between non-homologous chromosomes. None of these options accurately describes the aberration in the question.

A Wild-Type Chromosome Can Be Represented as ABC[*]DEFGH,and from This