Trisomy 4

A chromosomal abnormality consisting of the presence of a third copy of chromosome 21 in somatic cells.

A chromosomal abnormality consisting of the presence of a third copy of chromosome 19 in somatic cells.

A chromosomal abnormality consisting of the presence of a third copy of chromosome 18 in somatic cells.

A chromosomal abnormality consisting of the presence of a third copy of chromosome 17 in somatic cells.

A chromosomal abnormality consisting of the presence of a third copy of chromosome 15 in somatic cells.

A chromosomal abnormality characterized by the presence of three copies of genetic material for chromosome 13, instead of the normal two. It…