Evidence for Evolution

Structures with the same parts have different functions.

• vestigial structures

• homologous structures

• adaptive radiation

• fossil

Tags

NGSS.MS-LS4-2

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

Tags

NGSS.MS-LS4-2

Whales are aquatic mammals that contain a pelvis bone.  Even though it does not aid in its movement, the function must have been used by a common ancestor of the whale.  Thus, the pelvis is referred to as a(n)

• vestigial structure
• analogous structure
• homologous structure

Tags

NGSS.MS-LS4-2

Mutations are important because they bring about

• death of the organism in which they develop
• genetic variation needed for a population to evolve
• benefits for the individual, not for the population
• Hardey-Weinberg equilibrium within a population

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

_____________________are features present in modern organisms which are no longer in use.

• DNA

• Vestigial structures

• Fossils

• Homologous structures

_________________ show clear changes in an organism over time, the environment organisms lived in, the time period the organism lived in, and where the organism lived.

• DNA

• Vestigial structures

• Fossils

• Homologous structures

Tags

NGSS.MS-LS4-1

Because whales have a pelvis and femurs, it shows whales are descended from an ancestor that was able to _____________________.

• walk

• sing

• swim

• play hopscotch

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

What is this an example of?

• vestigial structures
• embryology
• homologous structures
• fossil record

Tags

NGSS.MS-LS4-2

The picture shows the members of the Camelidae family. The physical features and the geographical origin of these animals provide evidence that -

• they live in the same type of environment.

• they have slowly evolved to become herbivores.

• they have a common ancestor.

Tags

NGSS.MS-LS4-2

Recently, scientists have been able to use ___________to find common proteins and amino acids to determine how closely related species are.

• DNA

• Vestigial structures

• Fossils

• Homologous structures

Tags

NGSS.MS-LS4-2