Neutral Mutations

question 17

Multiple Choice

Neutral mutations:

• A)are not helpful in systematics.
• B)can be used to determine changes occurring in homologous genes since lineages diverged.
• C)have accumulated over time as the result of natural selection.
• D)have accumulated at a highly changeable rate over evolutionary time.
• E)account for a very small percentage of the variation in homologous genes in different groups of organisms.

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Definitions:

Eardrum

A thin membrane that separates the outer ear from the middle ear, vibrating in response to sound waves and playing a key role in hearing.

Auditory Nerve

The cranial nerve that transmits auditory information from the cochlea of the inner ear directly to the brain.

Retina

The light-sensitive layer at the back of the eye that captures images and sends them to the brain.

Cochlea

A spiral-shaped cavity within the inner ear, playing a key role in the process of hearing by converting sound vibrations into nerve impulses.