dakota and logan. fossils found in various layers of soil are a proof of evolution. as the...

Dakota and Logan

Fossils found in various layers of soil are a proof of evolution. As the environment has changed, fossils have changed and adapted to become better able to survive.

Animals found in various geographic locations show differences in body structure, either major or minor, that allow them to survive easier in the environment, this variation has to come from an origin species developing over time in a multiple of different ways.

There are differences between the embryo and the adult.

Same class embryo’s are usually very similar

Variations in adults are developed at later stages

All shows that variation occurs with age, and the adult passes on these variations

The anatomy of an organism is basically a collection of all the traits that have been inherited through the generations. It is the structure of the animal.

Structures that are similar in structure but not exactly the same. They have different functions.Human arms vs Bird wingsShows that both characteristics evolved from the same thing, but in different ways basically

Opposite of homologous. The structures are similar in function but not similar in origin.Bat wings with bones vs. Bee wings without bonesboth have flight, but are different in structure

Remnant of a structure or organs that had a function in an early ancestor

Ex. Human Appendix, Ostrich Wings

There is enough DNA to compare to tell how related two organisms are to one another.

With DNA we are able to tell certain species of animal are very similar to their ancestors. Despite slight mutations in the genes that occur over time with evolution.

Similarities among cell types can be found by comparing proteins, the technique is molecular fingerprinting

Organ cells that are similar amongst organisms can show us that they come from a common ancestor.

With this scientists were able to find that the cells for the vertebrate eye were originally developed in the brain of an ancient marine worm.