Bert and Ernie Have Very Different Sleeping Patterns

question 48

Multiple Choice

Bert and Ernie have very different sleeping patterns. Bert always wakes up early in the morning, but he starts to get tired early in the evening. Ernie, on the other hand, prefers to stay up late and then sleep until noon. Bert's and Ernie's different sleeping preferences are most likely due to their

• A)thalamus.
• B)amygdala.
• C)suprachiasmatic nuclei.
• D)corpus callosum.

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