Evolution and Changes Over Time
Science

Body parts of different species that have the same function but different structure and origin
Analogous structure
Body parts of different species that have the same function but different structure and origin. Analogous structure. Analogous structures are features that perform the same function in different species but have evolved separately, like the wings of birds and insects.

The selective breeding of organisms to produce offspring with specific traits
Artificial selection
The selective breeding of organisms to produce offspring with specific traits. Artificial selection. Artificial selection is when humans choose which plants or animals to breed to bring out desired traits.

A similar structure in different species, like a whale fin, bat wing and your arm
Homologous structure
A similar structure in different species, like a whale fin, bat wing and your arm. Homologous structure. Homologous structures are body parts in different species that have a similar structure due to a common ancestor, even if they serve different functions.

A structure that was useful to an ancestor but is no longer functional, like the appendix
Vestigial structure
A structure that was useful to an ancestor but is no longer functional, like the appendix. Vestigial structure. A vestigial structure is an anatomical feature that has lost its original function through evolution.