Evolution and Natural Selection

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

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

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

NGSS.HS-LS4-3

If a student is looking at the early stages of duck and fish development, then they are considering:

• Biochemical molecules
• Fossils
• Artificial Selection
• Embryology

You look at two species and see very similar DNA. What does this likely tell you?

• These are the same animal.
• These animals have a common ancestor.
• These animals are not likely related.
• These animals are likely becoming one species.

Tags

NGSS.HS-LS4-1

Squirrel populations are different colors throughout the United States. Squirrels in the southeast are red while squirrels in the northwest are typically gray. What accounts for this color difference?

• Chemicals in the clay cause mutations in the squirrels causing them to turn red.
• Red squirrels migrated to warmer climates because they didn't like the cold weather of the north.
• Red squirrels are red because it is warmer in the south.
• Red squirrels have adapted to the environment in the southeast because of the red color of the soil.

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

NGSS.HS-LS4-5

What do the homologous structures of human and wolf bones tell us?

• We both use our bones for the same things, leading to similar structures.
• They had a common ancestor.
• Humans are descendants of wolves.
• It is impossible to tell.

Tags

NGSS.HS-LS4-1

Which two organisms are the most closely related according to their DNA sequence?
Critter A--> ATG CTT AAC CCG TTA
Critter B--> ATC GTT TTC CCG TAA
Critter C--> ATG CTA TAG GCG TAA

• Critter A and B
• Critter A and C
• Critter B and C
• They are all equally related

Tags

NGSS.HS-LS3-1

What causes a species to evolve over time?

• Extinctions
• Chromosome recombinations and mutations
• The cycle of the moon
• Extinctions and environmental changes.

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

NGSS.HS-LS4-5

NGSS.HS-LS3-2

What does sexual reproduction allow for?

• Increased genetic diversity
• Increased offspring
• Decreased genetic diversity
• Decreased rate of evolution

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

Antibiotics are frequently given to humans that have strep throat. Why might this practice be considered a problem?

• Antibiotics cause mutations which could change to something deadly.
• The human body can metabolize the antibiotic to quickly, not allowing the antibiotic to reach the bacteria.
• A mutation can occur in the bacteria making it resistant to the antibiotic.
• Nothing will happen. It takes thousands of years for bacteria to evolve and become antibiotic resistant.

Tags

NGSS.HS-LS4-4

What does the fossil record tell us?

• Older species gave rise to new species.
• When older species existed.
• How species have physically changed over the years.
• All of the above

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

NGSS.HS-LS4-5

NGSS.HS-LS4-1