inversion

chromosome

Learn about this topic in these articles:

In evolution: Chromosomal mutations
…of chromosomes may occur by inversion, when a chromosomal segment rotates 180 degrees within the same location; by duplication, when a segment is added; by deletion, when a segment is lost; or by translocation, when a segment changes from one location to another in the same or a different chromosome.…
Read More
In heredity: Inversions
An inversion occurs when a chromosome breaks in two places and the region between the break rotates 180° before rejoining with the two end fragments. If the inverted segment contains the centromere (i.e., the point where the two chromatids are joined), the inversion is…
Read More