An Elk Herd Is Observed Over Many Generations

question 16

Multiple Choice

An elk herd is observed over many generations.Most of the full- grown bull elk have antlers of nearly the same size,although a few have antlers that are significantly larger or smaller than this average size.The average antler size remains constant over the generations.Which of the following effects probably accounts for this situation?

• A)a bottleneck effect that resulted in low genetic diversity
• B)a high rate of gene flow
• C)stabilizing selection
• D)directional selection

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