evolution evidence

The structures shown are_________

• homologous

• heterologous

• analogous

• vestigial

An example of a homologous structure

• human arm and bird wing

• human arm and butterfly wing

• butterfly wing and bird wing

An example of a homologous structure

• human arm and bird wing

• human arm and butterfly wing

• butterfly wing and bird wing

Structures with the same parts have different functions; suggests that organisms share a common ancestry

• vestigial structures
• homologous structures
• adaptive radiation
• fossil

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

• The function of these bones is the same in all animals
• They live in similar environments
• They have a common ancestor
• All organisms resemble humans

Structures that are inherited from a common ancestor are homologous.

• True
• False

When scientists see similarities between a hippopotamus embryo and a rabbit embryo, this suggests:

• Rabbits evolved from hippopotamus.

• Hippopotamus share a common ancestor with rabbits.

• Hippopotamus evolved from rabbits.

• Hippopotamus and rabbits share the same traits.