AP BIOLOGY

Detailed explanation-1: -Scientists have identified about 1.4 million locations which show single nucleotide polymorphism (SNPs). This means that at these locations the DNA shows single base difference. This information can be used to find location of disease associated.

Detailed explanation-2: -Scientists have identified about 1.4 million single nucleotide polymorphs in human genome.

Detailed explanation-3: -Most commonly, SNPs are found in the DNA between genes. They can act as biological markers, helping scientists locate genes that are associated with disease. When SNPs occur within a gene or in a regulatory region near a gene, they may play a more direct role in disease by affecting the gene’s function.

Detailed explanation-4: -8. Only 0.1% of human genome with some 3.2 million nucleotides represents the variability observed in human beings. 9. At about 1.4 million locations occur single nucleotide differences called SNPs (snips) or single nucleotide polymorphism.

Detailed explanation-5: -Single nucleotide polymorphisms (SNPs) are defined as loci with alleles that differ at a single base, with the rarer allele having a frequency of at least 1% in a random set of individuals in a population.