One of your brother's friends, Dylan, is unusually short with a stocky build; has a flat face, a large tongue, and an extra fold of skin on his eyelids; and suffers from cognitive deficits, hearing impairments, and a heart defect.Dylan likely has __________.

Question

Quizplus · Accepted Answer

The description fits the symptoms of Down syndrome, which is a genetic condition caused by a third copy of chromosome 21. It is characterized by distinct physical features, intellectual disability, and various medical conditions such as heart defects and hearing impairments. Option A "non-sex-linked-21" does not exist as a recognized condition. Option C "Edward's syndrome" refers to another genetic disorder caused by three copies of chromosome 18, which features severe intellectual disability, growth and developmental delays, and various physical abnormalities. Option D "an intellectual disability" is a general term that could be caused by various factors, but the specific symptoms mentioned in the description suggest Down syndrome.

One of Your Brother's Friends, Dylan, Is Unusually Short with a Stocky