Do you know exactly what Down Syndrome is? Down syndrome is a condition where a person has an extra chromosome. This is significant because chromosomes are basically what make up the genes of the body. This means that if there is something extra, issues can arise. More specifically, a baby is typically born with 46 chromosomes while babies with down syndrome have an extra copy of one of these chromosomes. This changes how a baby grows during pregnancy and after birth and can lead to some challenges.