Bio ch.22.txt

Descent with modification

The remains or traces of organisms from the past

Superimposed layers of rock made by the compression of new layers over old layers

The study of fossils

The principle that events in the past occurred suddenly and were caused by mechanism different from those operating in the present

Mechanisms of change are constant over time

Inherited characteristics of organisms that enhance their survival and reproduction in specific enviroments

A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits

Humans modifying species by selecting and breeding individuals that posses desired traits

Similarity resulting from common ancestry

Variations on a structural theme that was present in their common ancestor

Remnants of features that served important functions in the organism's ancestors

A diagram that reflects evolutionary relationships among groups of organisms

The indepentdent evolution of similar features in different lineages

Features that share similar function but not common ancestry

The graphic distribution of species

A single large continent

Found nowhere else in the world