NGSS HS-LS4-1: Communicate scientific information that common ancestry and biological evolution are supported by multiple lines of empirical evidence.
Similarity Score--%
Comparing to
Cytochrome b Gene Fragment (DNA)
DNA sequences encode genetic information. Overlapping sequences between species indicate descent from a common ancestor. Green = Match, Red = Mismatch/Mutation.
Species A
Species B
Cytochrome c Protein Fragment (Amino Acids)
Amino acid sequences form proteins. Because the genetic code is nearly universal, similarities in protein structure provide strong evidence for evolutionary relationships.
Species A
Species B
Homologous Structures (Forelimbs)
Anatomical evidence shows that different species share similar bone structures, even if they have adapted for different functions (e.g., grasping, flying, swimming), indicating a shared mammalian ancestor.