Epigenetic Changes

question 201

Multiple Choice

Epigenetic changes:

• A) affect the expression of genes and the traits they influence.
• B) alter the sequence of bases in DNA.
• C) occur before birth but not afterwards.
• D) are the same as mutations.

---

Definitions:

Intracellular Receptors

Intracellular receptors are proteins located within cells that bind to certain substances and mediate changes in gene expression.

Aldosterone

A chemical secreted by the adrenal glands which plays a role in managing blood pressure through the regulation of sodium and potassium concentrations in the body.

Cholesterol-based

refers to substances or structures derived from or containing cholesterol, a type of lipid that is an essential component of cell membranes and precursor of steroid hormones.

Preganglionic Axons

Axons that originate from neurons located in the brainstem or the spinal cord and terminate in autonomic ganglia, part of the autonomic nervous system.