Question

Chromosomal mutations can occur in a variety of ways one known human chromosomalmutation occurs when a segment of chromosome 9 is inverted which of the following bestdescribes how this chromosomal mutation occurs?A. A segment of DNA is inserted onto chromosome 9 without removing any other DNA.B. a segment of DNA on chromosome 9 is detached and reattached at a different place.C. a segment of DNA on chromosome 9 is removed and replaced by a new segment ofDNA.D. a segment of DNA is cut from chromosome 9 turned around and then re inserted intothe original location.

Answer 1

In this case, called inversion, a segment of DNA is cut from chromosome 9 turned around, and then reinserted into the original location, just as we can see in the image. Therefore, the answer would be D.