Which of the Following Is an Example of Natural Selection

question 1

Multiple Choice

Which of the following is an example of natural selection?

• A) birds that evolve a new beak shape in order to exploit a different food source
• B) the extinction of the mammoths due to hunting by a new predator
• C) fossils of trilobites that have the same morphology but are separated by millions of years
• D) the mass extinction of the dinosaurs due to a meteorite's impact 65 million years ago

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Definitions:

Canalization

Limitation on variance of expression of certain inherited characteristics.

Concordance

Agreement, harmony, or compatibility between opinions or actions.

Monozygotic Twins

Twins who originate from a single fertilized egg, making them genetically identical.

Heritability

The proportion of observed variation in a particular trait, within a population, that can be attributed to inherited genetic factors.