An Experiment Found That Newborn Rats Who Were Genetically Predisposed

question 332

True/False

An experiment found that newborn rats who were genetically predisposed to be calm and stress-resistant grew up to be nervous, high-strung, and easily stressed adult rats when raised by genetically unrelated, inattentive mothers. This occurred because epigenetic changes had taken place, which changed the rats' brain chemistry and literally reprogrammed their behavior.

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Definitions:

Uvula

The small, fleshy extension at the back of the throat, which hangs above the throat, playing roles in speech and swallowing.

Pharyngeal Tonsils

Lymphoid tissue located in the upper part of the throat, also known as adenoids, which play a role in the immune response.

Small Intestine

A long, coiled tube in the digestive system where most of the absorption of nutrients and minerals from food takes place.

Duodenum

The first section of the small intestine immediately beyond the stomach, which receives partially digested food from the stomach and begins the absorption of nutrients.