Theory of Evolution
Anatomical means relating to the structure of the bodies of people and animals.
Homologous structures are body parts that are similar in structure, but have different functions.
Examples- Humans, cats, whales, bats, horses, and birds
Body parts that are different in stricter, but have the same function.
Examples- Birds, bats and butterflies all have wings, but have evolved into different species with different structures.
Body parts that have reduced function, or are entirely useless.
Examples- Appendix, wisdom teeth, tail bone, pelvic bone in whales, and wings in flightless birds.
Biochemical evidence is the branch of science that deals with chemical processes that happen with in living organisms.
3 Amino Acids
There are at least 26 species of the protozoan Tetrahymena, all of which are nearly identical in structure, BUT there are enormous differences between their homologous proteins. The same is true of the more than 2000 species of fruit flies.
Comparing selected proteins, evolutionists hope to show not only phylogenetic relationships but also a "molecular clock" that will provide a relative time table for evolution.
The scientific study of prehistoric life.
2 Radio Metric Dating
3 Transitional Fossil
Radio Metric Dating
Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. This shows them how long fossils have been there and shows them different fossils from the past.
A transitional fossil is any fossil which gives us information about a transition from one species to another.
Example- Neanderthal skull to human skull