Non-coding regions: Single nucleotide polymorphisms (SNPs), which are single base variations, are most common in non-coding DNA. These areas do not directly create proteins and face less evolutionary pressure, leading to greater variation.
Coding regions: SNPs within coding regions can result in mutations.
Regulatory regions: These regions are crucial for gene control, and SNPs within them can influence gene expression.
Exonic regions: Exons are the gene segments that encode proteins.