In a population with a constant, finite population size (1000 individuals), with random mating, no selection, and no new mutations, at a locus with two alleles, What will happen to the allele frequencies over time?
1) Allele frequencies will remain constant over time
2) Allele frequencies will fluctuate randomly due to genetic drift
3) The dominant allele will increase in frequency
4) The change in allele frequency will depend on the heritability
5) Cannot be determined