Aperson has a condition known as trisomy. what does this mean?
the person has three genes that were deleted from one chromosome and translocated to another chromosome.
the person has a triplet copy of genes that broke off of one chromosome and reattached to another.
the person is missing three chromosomes from his or her genome.
the person’s cells have three chromosomes in a single set.

Trisomy is a condition in which a person's cells have three chromosomes in a single set. Normally, a person's chromosomes come in pairs and humans have 23 pairs of these chromosomes (46 in total).

When a person has a trisomy disorder, an additional chromosome is found in one of the pairs of chromosomes. When this happens the individual has a total of 47 chromosomes in his cells. Down syndrome, Edward syndrome, and Patau syndrome are the most common gene abnormalities caused by trisomy disorder.