What is the time difference between Perth Australia and New York? Perth is 12 hours ahead of New York from the 2nd Sun. of March until the 1st Sun. of Nov. From the 1st Sun. of Nov. until the 2nd Sun. of March, Perth is 13 hrs. ahead of Ne â¦ w York.
Microevolution is the change in allele frequencies that occur over time within a population.igration into or out of a population can change allele frequencies, as well as introducing genetic variation into a population. Immigration may add new genetic material to the established gene pool of a population. Conversely, emigration may remove genetic material.
In population genetics, allele frequencies are used to describe the amount of variation at a particular locus or across multiple loci. When considering the ensemble of allele frequencies for a large number of distinct loci, their distribution is called the allele frequency spectrum.