This question pertains to structural abnormalities that
chromosomes experience. Moreover, for the forms of deletions, translocations,
inversions, there could only be one or two chromosomes that can be involved.
For example, in deletions, only one chromosome should be
partially or completely deleted for a disorder to occur. For translocations, at
least two chromosomes are involved as this abnormality occurs when two
chromosomes exchange places. Lastly, inversions may only involve one chromosome
which experienced turning upside down and reattached itself.
