Chromosome inversion is:
Correct Answer: A single chromosome undergoes breakage and rearranges within itself
Description: Inversion: Occur when there are two interstitial of a single chromosome breaks in and the segment reunites & rearranged after a complete turnaround.
Option A - Deletion e.g. Wolf-Hirschhorn syndrome, Jacobsen syndrome, also called the terminal IIq deletion disorder.
Option B - Duplication - e.g. Charcot-Marie-Tooth disease type 1A
Option D - Insertion
Other structural disorders of chromosomes:
Rings:
A portion of a chromosome has broken off and formed a circle or ring.
This can happen with or without loss of genetic material.
Isochromosome:
Formed by the mirror image copy of a chromosome segment including the centromere.
Aneuploidy:
Numerical disorder of chromosomes.
Missing a chromosome from a pair is called monosomy and presence of more than two chromosomes of a pair (trisomy, tetrasomy, etc.)
Category:
Pathology
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