The factor that leads to Founder effect in a population is : (1) Natural selection (2) Genetic recombination (3) Mutation (4) Genetic drift
Option 4) Founder effect and bottleneck effect are two types of genetic drift. In a small isolated population change in gene frequency occurs by chance, it is called genetic drift. Sometimes the change in allele frequency is so different in the new sample of population that they become a different species. The original drifted population becomes founders and the effect is called founder effect.
