When a Population Shrinks, Causing Low Genetic Variation or the Fixation

question 39

Short Answer

When a population shrinks, causing low genetic variation or the fixation of a harmful allele, a genetic ____________________ has occurred.

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Definitions:

GABA

Gamma-Aminobutyric Acid, a neurotransmitter in the brain that inhibits nerve transmission, playing a role in regulating neuronal excitability.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for integrating sensory information and coordinating bodily functions.

Millivolts

A unit of electric potential or electromotive force equal to one thousandth of a volt.

Inhibitory Postsynaptic Potential

A kind of synaptic potential that makes a postsynaptic neuron less likely to generate an action potential.