How Did the Morphology of the Lake Apoyo Cichlids Help

question 23

Multiple Choice

How did the morphology of the Lake Apoyo cichlids help scientists understand the sympatric speciation process in this lake?

• A) Body type morphology was indicative of fish that typically live at the bottom of the lake (limnetic) and near the upper surface (benthic), separating the two species.
• B) Body type morphology was indicative of fish that typically live at the bottom of the lake (benthic form) and near the upper surface (limnetic), separating the two species.
• C) Body coloration was indicative of fish that live at the bottom of the lake (limnetic) and near the upper surface (benthic), separating the two species.
• D) Body coloration was indicative of fish that live at the bottom of the lake (benthic) and near the upper surface (limnetic), separating the two species.

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Definitions:

Impulse Control

The ability to resist or delay an urge to perform an act that could be harmful to oneself or others.

Prefrontal Cortex

The anterior part of the frontal lobes of the brain, involved in complex cognitive behavior, decision making, and moderating social behavior.

Myelination

The process by which axons are coated with a fatty sheath called myelin, increasing the speed at which electrical impulses are conducted.

Delay Gratification

The ability to resist the temptation for an immediate reward and wait for a later reward.