In General, Each Species of Fruit Fly in the Hawaiian

question 15

Multiple Choice

In general, each species of fruit fly in the Hawaiian archipelago is restricted to a single island. One hypothesis to explain this pattern is that new species formed after a small number of flies colonized each new island. This mechanism of speciation is called

• A) genetic equilibrium.
• B) artificial selection.
• C) sexual selection.
• D) the founder effect.
• E) assortative mating.

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Definitions:

Central Venous Structure

Refers to the major veins located near the heart that collect blood from the body and transport it back to the heart for reoxygenation.

Taenia Coli

Bands of longitudinal muscle fibers on the colon's surface, contributing to its segmentation and movement of contents.

Haustra

The sacculations or pouches formed by the folding of the colon's wall, allowing expansion and elongation for the process of digestion.

Villi

Small finger-like projections that line the small intestine, increasing its surface area for nutrient absorption.