Down Syndrome Results from Flaws in the Parents' Egg or Sperm

question 373

Multiple Choice

Down syndrome results from flaws in the parents' egg or sperm cells, a condition called

• A) Trisomy-21.
• B) phenylketonuria (PKU).
• C) Fragile-X.
• D) cretinism.

---

Definitions:

POP3

Post Office Protocol version 3, a standard email protocol used to retrieve emails from a remote server to a local client.

Additional Copy

An extra instance or version of a document or file.

Unsolicited Email

Email received that the recipient did not request, commonly known as spam.

Contextual Tabs

Special tabs in the Ribbon interface that appear only when a particular object is selected, providing options relevant to that object or task.