The patient is a 15 year old female, well known to your office since she was 7 y

The patient is a 15 year old female, well known to your office since she was 7 years old. Her mother has brought her to the office today to discuss birth control. The patient is a high functioning Down Syndrome patient.
Answer the following:
Describe briefly in one paragraph what is the pathophysiology of Down syndrome?
Identify the common signs and physical attributes of patients with Down Syndrome.
Evaluate the three pathological risk factors for the inheritance of Down Syndrome.
What are the ethical implications of this scenario?
Refernces must be peer reviewed and within 5 years.