By Dr Lynda Nazareth Down’s syndrome is one of the most common chromosomal abnormalities that affects approximately 1 in ...

In other situations, normal microarray analysis in the presence of an abnormal karyotype ... for pregnancies that screen positive for a Down's syndrome risk and advanced maternal age.

is one of many different types of translocation that cytogeneticists have identified in DS patients over the years. In these cases, Down syndrome is caused by a translocation of chromosomes 15 and ...

This genetic variation is known as translocation Down syndrome. While Trisomy 21 causes down syndrome, there are three types of Trisomy chromosomal changes that occurs: Complete Trisomy 21 ...