Use to study for the Evolution Test.
The remains or evidence of living things.
A method used to measure the age of a fossils or the rock that the fossil is found in.
Law of Superposition
States that in a series of sedimentary rock layers, the younger rocks normally lie on top of older rocks.
The most complete biological record of life on Earth. That shows how complex organisms evolved from more simple organisms
A change in a gene that may produce a change (or new trait) in the offspring of an organism.
To compare the anatomy of organisms to see how closely related they are to each other.
When ancestral body parts that are similar in structures evolve. (Bats wing, human arm, dogs leg)
To compare the embryos (early stages of development) of different species to see how closely related they are.
The study of the chemical similarities in DNA molecules.
The more similar the structure of protein molecules of different organisms, the more closely related they are.
An ancient organism that is related to a modern organism. They share common traits.
A change in an organism that increases an organism's chance of survival. These changes occur due to mutations in the genes.
The survival and reproduction of those organisms best adapted to their surroundings.
First living organism on Earth.
Developed the Theory of Evolution by Natural Selection
Any fossilized remains of a life form that exhibits traits common to both a Common Ancestor and its descendant.
A variety of genes in a gene pool. No two individules are exactly alike. This allows the species to survive changes in the environment. Sexual reproduction increases Genetic Variation.