Biology - Classification of evolution Trial

Evolutionary Theory

Is the idea that all living things change over time thorugh a process called evolution

Comparative anatomy

Is the study of similarities & differences in the structure (anatomy) of different organisms

Homologies

Features or traits in different species that are similar because they were inherited from the common ancestor

Cladogram

A diagram that shows the evolutionary relationships among different species or groups of organisms

Outgroup

The most distantly related species in the cladogram

Clades

A common ancestor and all of its descendants

Nodes

Represents a common ancestor from which two or more descendant groups (taxa) have evolved.

Root

The initial ancestor common to all organisms within the cladogram

Ancestor

An organism from which others have descended

Biological evolution

The process through which organisms change over time through variations in traits and characteristics

Natural Selection

The process where certain traits become more common in a group of living things over time because they help those organisms survive better in their environment.