Final answer:
Down syndrome is a genetic disorder characterized by distinctive facial features and developmental delays. Individuals with Down syndrome can lead fulfilling lives with proper assistance and support.
Step-by-step explanation:
The developmental disability described in the question is Down syndrome.
Down syndrome is a genetic disorder caused by the presence of an extra copy of chromosome 21.
People with Down syndrome have characteristic facial features, including a smaller than average head circumference, low nasal bridge, short nose, and a flattened and thin upper lip.
They may also have shorter fingers and below-average midface size.
Down syndrome is associated with intellectual disability, vision problems, congenital heart disease, and susceptibility to cancer.
However, it's important to note that individuals with Down syndrome can lead fulfilling lives with proper assistance and support.
In severe cases, individuals with Down syndrome may exhibit weak and flexible bones, leading to shorter stature.