alellelgyakoriságokat

Alelljellegzetességek refers to the different versions of a gene that can exist in a population. These variations arise from changes in the DNA sequence, known as mutations. When an organism has two copies of a gene, one inherited from each parent, these copies can be the same allele or different alleles. The combination of alleles an individual possesses for a particular gene is called its genotype.

The physical expression of these alleles is called the phenotype, which are the observable traits. Alleles can be dominant or recessive. A dominant allele expresses its trait even if only one copy is present, while a recessive allele only expresses its trait if both copies are the same. The frequency of different alleles within a population is a key factor in understanding genetic diversity and evolutionary processes. Changes in allele frequencies over time can lead to evolution. Studying alelljellegzetességek helps in understanding inheritance patterns, genetic disorders, and the biological makeup of species.