Main page / Astigmatism / Glasses and lenses to correct astigmatism. Glasses with special cylindrical lenses are the most common ways to correct astigmatism. According to the statistics released by leading ophthalmological companies, up to 80% of astigmatic patients prefer eye glasses for vision correction.
Population:A group of individuals of the same species, the same geographic area, at the same time, regularly interbreed Gene Pool:The collection of all gametes in a population Genotype Frequency: the frequency or proportion of genotypes in a population.llele Frequency: determines how frequent the allele expression of a particular gene arises in a population. Phenotype Frequency: A ratio stating the number of times a specific phenotype occurs in a population.
It is important to note that the frequency of an allele, or single gene, is independent of whether it is dominant or recessive. Given the numbers in the example, you can see that 49% of the people you meet will have type O blood, and there is a 49% chance that you will be type O as well.