What is Down syndrome?
Down syndrome is a condition in which a person has an extra chromosome or an extra piece of a chromosome. This extra copy changes how a baby's body and brain develop. It can cause both mental and physical challenges during their lifetime. Even though people with Down syndrome might act and look similar, each person has different abilities.
What causes Down syndrome?
Chromosomes are tiny "packages" in your cells that contain your genes. Genes carry information, called DNA, that controls what you look like and how your body works. People with Down syndrome have an extra copy of chromosome 21. In some cases, they may have an extra copy of part of the chromosome. Having an extra copy of a chromosome is called trisomy. So sometimes Down syndrome is also called trisomy 21.
- Down Syndrome Tests What are Down syndrome tests? Down syndrome is a condition in which a person is born with an extra chromosome or an extra piece of ... start a pregnancy. Why do I need a Down syndrome test? You may need Down syndrome testing during ...
- Down Syndrome (National Library of Medicine)What is Down syndrome? Down syndrome is a condition in which a person has an extra chromosome or an extra piece of a chromosome. This extra ... challenges during their lifetime. Even though people with Down syndrome might act and look similar, each person has ...
- Down syndrome is a genetic condition in which a person has 47 chromosomes instead of the usual 46. ... In most cases, Down syndrome occurs when there is an extra copy of chromosome 21. This form of Down syndrome is called trisomy 21. ...
- National Down Syndrome Society (National Down Syndrome Society)... NDSS Adult Summit! Register NDSS empowers individuals with Down syndrome and their families by driving policy change, providing ... any location! Join us The first Barbie with Down syndrome On April 25, 2023, Barbie® introduced its first ...
- ... Measuring this thickness helps assess the risk for Down syndrome and other genetic problems in the baby. ... back of their neck. In a baby with Down syndrome or other genetic disorders, there is more fluid ...
- About Down Syndrome (National Down Syndrome Society)Down Syndrome/Start Here ... Down Syndrome ... National Down Syndrome Society ... In every cell in the human body there is a nucleus, where genetic material is stored ...
- Down syndrome is a chromosomal condition related to chromosome 21.
- Blood Diseases and Down Syndrome (National Down Syndrome Society)Blood Diseases & Down Syndrome
- Facts about Down Syndrome (Centers for Disease Control and Prevention)Down syndrome is a condition in which a person has an extra chromosome. Learn more facts about Down Syndrome.
- How Do Health Care Providers Diagnose Down Syndrome?
(Eunice Kennedy Shriver National Institute of Child Health and Human Development) Health care providers can check for Down syndrome during pregnancy or after a child is born.
(National Human Genome Research Institute) 