1 Down syndrome, usually is caused by an extra copy of chromosome 21 (trisomy 21). Characteristics include decreased muscle tone, asymmetrical skull, slanting eyes and mild to moderate mental retardation.  Edward's syndrome, which is the second most common trisomy after Down syndrome. It is a trisomy of chromosome 18.
Guanxi describes the basic dynamic in personalized networks of influence, and is a central idea in Chinese society.
A Chinese mother and son. Chinese is defined as something relating to China. An example of someone Chinese was the ancient Chinese philosopher Confucius. The definition of Chinese is a person or language from China. An example of Chinese is the Mandarin dialect.