Allele-A Genetics Definition. An allele is one of two or more versions of a gene. An individual inherits two alleles for each gene, one from each parent. Credit: Darryl Leja, NHGRI.
Population of Swisher, IA Last official estimated population of Swisher city (Johnson County**, Iowa state) was 932 (year 2014) [1]. This was 0% of total US population and 0.03% of total Iowa state population.
As of 2015, Iowa had an estimated population of 3,123,899, which is an increase of 16,773 people or 0.56%, from the prior year and an increase of 77,544 or 2.55%, since the year 2010. This is the first time the state has topped the three million mark in population. Iowa is the 30th most populated state in the country.