Which chromosomal mutation occurs when part of one chromosome breaks off and attaches to a different chromosome?

Which chromosomal mutation occurs when part of one chromosome breaks off and attaches to a different chromosome?

• A. Translocation Chromosomal Mutation
• B. Inversion Chromosomal Mutation
• C. Deletion Chromosomal Mutation
• D. Duplication Chromosomal Mutation

Answer: (A)

Translocation is the mutation described when a piece of one chromosome breaks off and attaches to a different chromosome. This can happen as a reciprocal exchange between two chromosomes or as a one-way transfer where a segment moves to another chromosome. The key idea is that a segment ends up on a chromosome it isn’t supposed to be on, which can disrupt gene function or regulation and sometimes create new gene fusions. Inversions, by contrast, involve flipping a segment within the same chromosome. Deletions are losses of a chromosome segment, reducing genetic material. Duplications are repeats of a segment, increasing material.

Translocation is the mutation described when a piece of one chromosome breaks off and attaches to a different chromosome. This can happen as a reciprocal exchange between two chromosomes or as a one-way transfer where a segment moves to another chromosome. The key idea is that a segment ends up on a chromosome it isn’t supposed to be on, which can disrupt gene function or regulation and sometimes create new gene fusions.

Inversions, by contrast, involve flipping a segment within the same chromosome. Deletions are losses of a chromosome segment, reducing genetic material. Duplications are repeats of a segment, increasing material.