Down syndrome, trisomy 21 (mechanism of disease)
![](https://i.ytimg.com/vi/GFtYMF9F75k/mqdefault.jpg)
7:45
Placenta previa (mechanism of disease)
![](https://i.ytimg.com/vi/DBCKZI9g5yI/mqdefault.jpg)
5:20
Klinefelter syndrome (mechanism of diseases)
![](https://i.ytimg.com/vi/EKtO9DlEgjA/mqdefault.jpg)
13:31
Down syndrome (Trisomy 21) - causes, symptoms, diagnosis, & pathology (Updated 2024)
![](https://i.ytimg.com/vi/QBussteAbA0/mqdefault.jpg)
13:59
Trisomy (21, 18, and 13) & Nondisjunction Genetics
![](https://i.ytimg.com/vi/E1FCDXdXNxA/mqdefault.jpg)
12:24
Meningitis (mechanism of disease)
![](https://i.ytimg.com/vi/PeJSMT7A-vM/mqdefault.jpg)
11:52
Robertsonian translocation: 21q14q
![](https://i.ytimg.com/vi/MLWs3h7Gf60/mqdefault.jpg)
13:34
Down Syndrome (Trisomy 21 and Translocation)
![](https://i.ytimg.com/vi/neXnaj4bInI/mqdefault.jpg)
6:49