A Population of Dark-Eyed Junco Birds Became Established near the California

question 26

Multiple Choice

A population of dark-eyed junco birds became established near the California coastline, many miles from the junco's normal habitat in the mixed-coniferous temperate forests in the mountains. Juncos have white outer tail feathers that the males display during aggressive interactions and during courtship displays. Males with more white in their tail are more likely to win aggressive interactions, and females prefer to mate with males with more white in their tails.
Population sizes in the coastal areas have been reasonably large, and there are significant differences between the coastal and the mountain habitats. The coastal habitat is more open (making birds more visible) and has a lower junco density (decreasing intraspecific competition) than the mountain forests. Given this information, which of the following evolutionary mechanisms is the most likely cause of the difference between the coastal and mountain populations?

• A) natural selection
• B) genetic drift
• C) gene flow
• D) mutation

Understand how sleep habits impact sleep quality and outcomes.

Comprehend the mechanisms of action and effects of depressant drugs.

Analyze the changes in sleep patterns across the lifespan and the implications of these changes.

Understand the effects of sleep deprivation on mood, cognitive, and physical performance.

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Definitions:

Ziggurat

In ancient Mesopotamian architecture, a tiered platform for a temple.

Persepolis

An ancient ceremonial capital of the Persian Empire, located in modern-day Iran, known for its vast array of monumental buildings.

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An ancient civilization located in what is now southwestern Iran, known for their contributions to art, architecture, and governance systems.

Tigris River

One of the two major rivers in Southwest Asia, flowing through Turkey and Iraq, and known for its historical significance in ancient Mesopotamian civilizations.