Evidence of Evolution

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

• vestigial structures
• homologous structures
• adaptive radiation
• fossil

Tags

NGSS.MS-LS4-2

Study of embryos of various organisms to show a common ancestor because of similarities in development

• natural selection
• embryology
• speciation
• evolution

Tags

NGSS.MS-LS4-3

How do fossils provide evidence that evolution has happened on Earth?

• Fossils show how the sizes of certain animals has changed drastically over millions of years
• Fossils show that some species have gone extinct
• Fossils show how life forms present today are different than those from the past
• Different sedimentary rock layers provide evidence for how the environment has changed over time

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Vestigial structures

• structures that perform a similar function but are not similar in origin

• remnants of once-important structures that have slowly lost all or most of their function

• features found in different organisms that share structural similarities but may have very different functions

• preserved remains of an organism

Tags

NGSS.MS-LS4-2

Which layer is the youngest

• 1
• 2
• 3
• 4

Tags

NGSS.MS-ESS1-4

What is this an example of?

• Homologous structure

• Analogous structure

• Vestigial organs

• Functional adaption

Tags

NGSS.MS-LS4-2

What best describes the hind leg bones seen in the whale?

• The bones are analogous structures to the fins of living fish.

• The bones are vestigial structures that had a function in an ancestor.

• The bones are homologous structures to the wings of butterflies.

• The bones are fossil structures from an extinct ancestor.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

If two organisms have similar traits of DNA they are probably

• share a common ancestor
• share a common environment
• share a common population
• speciation

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

According to this data, the unknown bacterial species is most closely related to: 

• Species I
• Species II
• Species III
• Species IV

Tags

NGSS.MS-LS4-2

The moth wing and the bat wing are example of structures.

(a)  

• Analogous
• Homologous
• Vestigial
• Fossil

Tags

NGSS.MS-LS4-2