X, answer is X, good luck now, pls answer my question pls pls.
I believe it would be B. More than a year (Since it is a slow change, and that is the longest amount of time). Hopefully this helps
Chromosomal deletion is the loss of genetic code, caused by a segment of chromosome breaking away during DNA replication. The best answer is the third one, "when part of a chromosome breaks off and does not reattach."
