In a Series of Studies by Meaney and Colleagues, Rat

question 68

Multiple Choice

In a series of studies by Meaney and colleagues, rat pups are randomly assigned to be raised by surrogate mothers who spend a lot of time licking and grooming (high LG) them or surrogate mothers who spend little time engaging in this behavior (low GH) . Rat pups raised by high LG surrogate grow up to be _____ fearful in novel situations, which can be attributed to a(n) _____ in DNA methylation.

• A)less; increase
• B)less; decrease
• C)more; increase
• D)more; decrease

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Definitions:

Microtubules

Microtubules are cylindrical structures made of tubulin proteins, part of the cell's cytoskeleton, playing crucial roles in cell division, shape, and transport.

Cytoskeleton

A complex network of interlinking protein filaments and tubules in the cytoplasm of cells, giving them shape, coherence, and the ability to move.

Support

The action or role of bearing the weight or stress of something, or providing assistance and stability when needed.

Cytoplasm

The jelly-like substance within a cell that contains the organelles, excluding the nucleus.