Trisomy is a genetic condition where a person is born with an extra chromosome. The most common type of trisomy is Down syndrome.

Dec 26, 2024 · Down syndrome is a genetic condition where a person is born with an extra chromosome. This can affect how their brain and body develop. People diagnosed with Down …

The extra chromosome is provided at conception as the egg and sperm combine. [16] Translocation Down syndrome involves attachment of extra chromosome 21 material. [17][18] …

Jul 23, 2025 · Explore the biological origins of an extra chromosome and learn how this genetic variation can influence a wide spectrum of human development and health.

Also known as Down syndrome, trisomy 21 is a genetic condition caused by an extra chromosome. Most babies inherit 23 chromosomes from each parent, for a total of 46 …

Jun 25, 2025 · What is Down syndrome? Down syndrome is a disorder caused by having an extra chromosome. Chromosomes are pieces of DNA that have the blueprint for the human body. …

Extra or Missing Chromosomes Aneuploidy A genetic condition where someone has either too many or two few chromosomes is called aneuploidy (AN-yoo-ploy-dee). A complete set of …

Oct 21, 2025 · Instead of splitting into two identical chromosomes during the division, the chromosome will divide abnormally and end up with extra genetic material. 2 This can lead to …

Oct 19, 2025 · An extra chromosome in humans can lead to a variety of genetic conditions, ranging from mild traits to life-altering syndromes. But what does having an extra chromosome …

Apr 30, 2025 · An extra chromosome can shape a child’s body, health, and experiences, but it doesn’t define their worth. Today, we'll explore Trisomy 21 (Down syndrome), Trisomy 18 …