Use the Following Information to Answer the Following Questions

question 79

Multiple Choice

Use the following information to answer the following questions.
In Drosophila after ~100 minutes postfertilization, the embryo looks like the following diagram, with all nuclei having moved to the periphery and, subsequently, four of the nuclei being sequestered at the posterior end.

Drosophila embryo after about 2 hours.
-Formation of the pole cells (the four sequestered cells) demonstrates the role of

• A) segmentation genes.
• B) homeotic genes.
• C) maternal effect genes.
• D) zygotic genes.
• E) all of the above.

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Definitions:

Depression

A psychiatric condition marked by a continuous low mood or a lack of enjoyment in hobbies, significantly disrupting everyday functioning.

Prefrontal Cortex

The front part of the frontal lobe of the brain, involved in planning complex cognitive behavior, personality expression, decision making, and moderating social behaviour.

Transcranial Magnetic Stimulation

A noninvasive procedure that uses magnetic fields to stimulate nerve cells in the brain to improve symptoms of depression.

Deep Brain Stimulation

A neurosurgical procedure where electrodes are implanted in particular brain areas to treat various neurological conditions through electrical impulses.