Natural Selection and Anatomical Evidence

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

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

• 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

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NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Individuals that are well adapted to their environment will survive and produce:

• Fewer mutations
• Stronger genes
• More offspring
• Better traits

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NGSS.MS-LS1-4

NGSS.MS-LS4-4

What is suggested by the similarity of early embryos of different species of vertebrates?

• no evolutionary relationships between the groups
• recent common ancestry
• similar environments in the past
• evolution from a distant common ancestor

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NGSS.MS-LS4-2

NGSS.MS-LS4-3

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

For evolution to happen, this has to occur first:

• an organism finds a new mate
• and organism's DNA changes
• The environment in which a species lives changes
• the population increases

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-5

How would relative dating be used to determine the age of a fossil?

• Fossils in layers closer to Earth's surface are older.
• Fossils in deeper rock layers are older.
• The age of fossils is compared using radioactive dating.
• DNA is taken from fossils

Tags

NGSS.MS-ESS1-4

If modern organisms have a lot of homologous structures, what inference might paleontologists make about those organisms?

• They are reptiles
• One organism evolved from the other.
• The organisms have a common ancestor

Tags

NGSS.MS-LS4-2

Which is not evidence for evolution?

• many animals have homologous structures due to common ancestry
• Many animals have vestigial structures from an ancestor
• We can observe changes in life forms by observing the fossil record
• All of these are evidence for evolution

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Predict which moth would increase in population

• light 
• dark

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4