Recognize Evidence for Evolution

From an evolutionary perspective, organisms that share a common ancestor have structures that are similar, but have different functions.These similar structures are known as

• vestigial structures

• analogous structures

• homologous structures

• fossil structures

Tags

NGSS.MS-LS4-2

Humans, birds, whales and lizards all have similar arm bones. What do evolutionists consider 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

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct from the evolutionary perspective?

• Fossil A and C are the same age

• Fossil B is older than fossil C

• Fossils A is older than fossil B

• Fossil D is older than fossil C

Tags

NGSS.MS-LS4-1

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

What is this an example of?

• vestigial structures

• embryology

• homologous structures

• fossil record

Tags

NGSS.MS-LS4-2

The similarities of the bones in the diagram provide evidence that---

• The organisms shown lived in the same natural envionrment

• The organisms shown may have developed from a common ancestor

• All vertebrate species have identical forelimbs

Tags

NGSS.MS-LS4-2

Homologous structures are ​ (a)   in structure but ​ (b)   in function

• similar

• different

Tags

NGSS.MS-LS4-2

Structures are similar in function but not in anatomical structure
EXAMPLE: bird wings vs. butterfly wings

• Vestigial

• Homologous

• Analogous Structures

• Embryonic

Which of the following is an example of a vestigial structure?

• the wings of a red-tailed hawk

• the hind limbs of a house cat

• the fins of sharks

• the tailbone of a human

Tags

NGSS.MS-LS4-2

What type of evidence of evolution is being demonstrated?

• Fossil record

• Vestigial structures

• Homologous structures

• Comparative DNA

Tags

NGSS.MS-LS4-1