The Brain of an Individual with Down Syndrome Would Be

question 30

Multiple Choice

The brain of an individual with Down syndrome would be expected to differ from that of a brain of a normal individual in that

• A) the superior temporal gyrus is larger in the left hemisphere of the Down syndrome brain.
• B) the frontal lobes are larger in the Down syndrome brain.
• C) the Down syndrome brain is 10% heavier than the normal brain.
• D) the Down syndrome brain has simpler and smaller gyri and sulci.
• E) the superior temporal gyrus is larger in the right hemisphere of the Down syndrome brain.

---

Definitions:

mRNA

Messenger RNA, a form of RNA that carries genetic information from the DNA to the ribosome, where it can be translated into a protein.

Nucleotides

Organic molecules that serve as the building blocks of nucleic acids like DNA and RNA.

Introns

Non-coding sections of an RNA transcript, or the DNA encoding it, that are spliced out before the mRNA molecule is translated into protein.

Pre-mRNA

is the initial form of mRNA produced by transcription in eukaryotic cells before undergoing modification to become mature mRNA.