Evaluate
- $2 ^ { 9 }$ A) 512
B) 81
C) 256
D) 18

question 45

Multiple Choice

Evaluate.
- $2 ^ { 9 }$

• A) 512
• B) 81
• C) 256
• D) 18

---

Definitions:

Split-Brain Patients

Individuals who have undergone a surgical procedure called corpus callosotomy, which severs the corpus callosum, effectively splitting the brain's hemispheres and sometimes used to treat severe epilepsy.

Corpus Callosum

A large band of neural fibers connecting the two cerebral hemispheres and facilitating interhemispheric communication.

DNA Molecule

The fundamental and distinctive structure of biological organisms, consisting of two long chains of nucleotides twisted into a double helix and responsible for genetic traits.

Epigenetic Mark

Chemical modifications to the DNA or surrounding proteins that affect gene expression without changing the DNA sequence and can be influenced by environmental factors.