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Practice problem

What is the Bottleneck Effect? — Definition & Examples

By Sarah Morgan
The image shows changes in a population of ladybugs. Ladybugs can have orange, orange and red, or red wings. In the first group, the population is large and there are equal amounts of red and orange wings. In the second group, the population is much smaller, and most of the wings are red. The third group contains only a question mark.

A population of ladybugs has equal frequency of red and orange codominant alleles. After a bottleneck event, the population of ladybugs has a ratio of red to orange alleles of 3 to 1. As this new population reproduces, what can you conclude about how the ladybugs will look?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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