A blood test, called the AFP (alphafetoprotein) or triple screen, may help a pregnant woman find out her baby's risk of several diseases, including Trisomy 21 (Down Syndrome) and Trisomy 13, though it can not give a definite answer.
Patau syndrome, also called trisomy 13, is a congenital (present at birth) disorder associated with the presence of an extra copy of chromosome 13. The extra chromosome 13 causes numerous physical...
Something tells me that trisomy 21 is not really the most common, but it is the common among babies that actually live. Other trisomies common among live births are those of the 13th and 18th...
Trisomy is a condition in which someone has three copies of one chromosome in cells that have two copies of the other chromosomes. The condition follows an error in cell division in the formation of...