Evolution Formative

If an organism has a vestigial structure, that structure likely once had a function in a(n)

• close relative
• early ancestor
• unrelated organism
• embryological stage

A remnant or trace of an organism from the past is called a _______.

• Ancestor
• Skeleton
• Fossil
• Imprints

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

• vestigial structures
• homologous structures
• adaptive radiation
• fossil

If species A and B have very similar genes and proteins, what is probably TRUE?

• species A and B share a relatively recent common ancestor
• species A evolved independently of species B for a long period
• species A is younger than species B
• species A is older than species B

this type of evolution happens on a small scale, typically within a single population

• microevolution

• macroevolution

• natural selection

• artificial selection

body parts in organisms that have the same functions, but have different structures

• analagous structures

• homologous structures

• vestigal structures

this type of evolution happens on a small scale, typically within a single population

• microevolution

• macroevolution

• natural selection

• artificial selection

large-scale evolutionary change that takes place over long periods of time

• microevolution

• macroevolution

body parts in different organisms that have the same basic structure, but may have different functions

• analagous structures

• homologous structures

• vestigal structures

body parts in organisms that have the same functions, but have different structures

• analagous structures

• homologous structures

• vestigal structures