EVIDENCE

• Embryology - scientific study of embryos and their development.
• Homologous Structure - refers to the physical structures of the organisms that have the same evolutionary origin positions.
• Vestigial Structure - A structure of an organism with few or no functions but is clearly homologous to the structure of another organism is called a vestigial structure.
• Fossils - preserved remains of plants and animals.
• Genetic evidence - has shown that all life consists of similarities in nucleotide sequence and proteins.
• Radioisotope - the radioactive components of potassium-argon.
• Gene flow - certain organism join a new population and reproduce.
• Genetic drift - is a change in allele frequencies that affect an organism to be eliminated.
• Mutation - New alleles can form through mutation that will create another genetic variation needed for evolution. 
• Sexual selection - Unique traits of many animals improve mating success for evolution.