Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
DNA sequence similarities refer to the degree of identity in the sequence of nucleotides between different species. It is used as a measure of genetic relatedness and evolutionary relationships.
Related terms
Genome: The complete set of genes or genetic material present in a cell or organism.
The basic building block of DNA and RNA, consisting of a sugar, phosphate group, and nitrogenous base.
Phylogenetics: The study of evolutionary relationships among species based on similarities and differences in their physical or genetic characteristics.