Genetic diversity in a population can be preserved by natural selection. Which one of the following conditions would NOT promote the preservation of genetic diversity?
1
When different environments favor different alleles within the population.
2
When rare alleles are favored over more common alleles due to selective pressures.
3
When individuals with a combination of different alleles have higher fitness than those with identical alleles.
4
When stabilizing selection favors the average phenotype over extreme phenotypes.