Changes within a gene pool occurring from generation to generation is called microevolution. Allele frequencies in a population may change due to gene flow, genetic drift, natural selection and mutation. These are referred to as the four fundamental forces of evolution.
The Hollister, CA forecast for Apr 03 is 64 degrees and Sunny . There is 45 percentage chance of rain and 5 mph winds from the East-Southeast.
The City was incorporated on August 29, 1872. The western portion of San Benito County, including Hollister, was separated from Monterey County in 1874. The county was expanded eastward in 1887 to include portions taken from Merced and Fresno Counties.