Genetic drift can sometimes have a stronger effect than natural selection in certain situations. Let's look at a few examples:

1. Small Populations: When there are fewer than 50 individuals in a group, random events can really change the gene makeup. For example:

   • If half of the individuals are lost, the variety of genes could drop by up to 25%.

2. Founder Effects: This happens when a new group starts with only a few individuals. Because of this small start, some rare genes can become very common. For instance:

   • The Amish community has more cases of Ellis-van Creveld syndrome because of founder effects.

3. Bottleneck Events: This occurs when a population shrinks a lot in size, like after a natural disaster.

   • A bottleneck can cut genetic diversity by more than 90%.

In these cases, genetic drift can cause quick changes in evolution that might be faster than the gradual changes caused by natural selection.