AP BIOLOGY

EVOLUTION

EVOLUTION OF A POPULATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The Galapagos Islands in the Pacific Ocean have varied habitats. Divergent evolution is occurring on these islands, meaning that species that live there
A
have lived unchanged through long periods of stability
B
are becoming more like each other in response to their habitats
C
change in response to changes in other species they interact with
D
had common ancestors but have become increasingly different
Explanation: 

Detailed explanation-1: -Divergent evolution or evolutionary branching occurs in response to selective pressure like changes in biotic factors (e.g., species interactions) and abiotic factors (environmental factors like climate, nutrient status, physical structure, and niche divergence) which drive natural selection.

Detailed explanation-2: -Extinction is the dying out of a species. Extinction plays an important role in the evolution of life because it opens up opportunities for new species to emerge.

Detailed explanation-3: -The evolution of species is largely influenced by environmental factors and predation activities. Galapagos finches diverging from their descendant species is one of the most commonly cited examples of divergent evolution.

Detailed explanation-4: -Galapagos tortoises have two very different shapes, each adapted for different feeding habits needed on low, arid islands versus high, lusher islands.

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