A karyotype you are viewing shows an extra piece of chromosome 1 attached to chromosome 22.What type of abnormality caused this?

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In a translocation, a piece of one chromosome breaks off and attaches to a different chromosome. In this case, a piece of chromosome 1 has attached to chromosome 22. This is different from an inversion or deletion, where a portion of a chromosome is flipped or missing, respectively. Nondisjunction refers to the failure of chromosomes to separate properly during cell division and results in an abnormal number of chromosomes in the resulting cells. Sex-linked abnormalities involve genes on the sex chromosomes (X and Y) and are not relevant to this karyotype.

A Karyotype You Are Viewing Shows an Extra Piece of Chromosome