Down Syndrome is usually caused by an extra copy of which chromosome?
- 23
- 15
- 21
- 24
Answer
The correct answer is C) 21.
More Science & Nature questions
- How many teeth does the average adult mouth have (except for wisdom teeth)?
- Which NASA Space Shuttle broke apart during atmospheric re-entry on February 1, 2003?
- About how old is Earth?
- Which part of the body does glaucoma affect?
- Which portion of the Marijuana plant produces the psychoactive substance known as THC?
- What cell organelle is known as "the powerhouse of the cell?"