Answer the following question given this paragraph:   Chromosomal alterations are mutations that change chromosome structure. They occur when a section of a chromosome breaks off and rejoins incorrectly or does not rejoin at all. Possible ways these mutations can occur are illustrated in Figure below . Go to this link for a video about chromosomal alterations: http://www. youtube. com/watch?v=OrXRSqa_3lU (2:18).   Q: Chromosomal alterations are mutations that change what?   A:
Available choices: (i). Skeleton Structure. (ii). detected structure. (iii). discovery structure. (iv). chromosome structure.
(iv).