Question

Which of the following is the most common type of DNA sequence difference between individuals of the same species?

1) Single nucleotide polymorphism (SNP)
2) Insertion
3) Deletion
4) Inversion

Answer 1

The most common type of DNA sequence difference between individuals of the same species is a Single Nucleotide Polymorphism (SNP).

Step-by-step explanation:

The most common type of DNA sequence difference between individuals of the same species is a Single Nucleotide Polymorphism (SNP). An SNP occurs when a DNA sequence variation happens at a single nucleotide in the genome. For example, a change from a base C to a base T would result in two alleles, the C allele and the T allele. SNPs are very common and have an impact on protein structure and function, as well as the resulting phenotype.