Down Syndrome Is Also Known as Trisomy-21 Because Individuals with Down

question 218

Multiple Choice

Down syndrome is also known as trisomy-21 because individuals with Down syndrome __________.

• A)have three distinct facial features by the 21st week of pregnancy
• B)show three distinct temperament patterns by the 21st week of infancy
• C)have an extra chromosome on the 21st pair
• D)have 21 genes on the 3rd pair of chromosomes

---

Definitions:

FBD

FBD stands for Function Block Diagram, a graphical representation used in programmable logic controllers (PLCs) and various programming environments to illustrate the interconnection and function of control blocks.

Sheet

A broad, flat piece of material such as metal, paper, or plastic, typically rectangular.

ICON

A small graphical representation or symbol used in user interfaces to represent a program, file, or function.

Input Connector

A device or port where signal or data enters an electronic system or component.