Evolution Test Review ~Mrs. Connor

Fossil

• the solidified remains or imprint of a previously existing organism

Adaptation

• The opposable thumb allows humans to grasp objects firmly

• Helped us survive over time

Natural Selection• Individuals in a population that have traits or

abilities that give them a competitive advantage over other population members and are more likely to survive.

the red-eyed tree frog

• In order for the red-eyed tree frog to produce fertile offspring, it should mate with its own species, which is…?

Earth is 4.6 billion years old!

1.Organisms can develop adaptation

2.Species can die out and be replaced

3.Evolution can occur

A Fossil Record

• An historical sequence of life of fossil species is called a …?

...more likely those organisms are extinct

~The deeper in the Earth’s crust fossils are found the …?

Vestigial StructuresWhale’s hind-limb bones or our wisdom teeth were once useful

structures called…?

Evolution

• Comparing different organism’s skeletal structures, DNA, and cells all provide evidence that supports the theory of ______________.

…survive and reproduce at a greater rate than other organisms

Organisms with traits well-suited to the

environment will…

Comparing human DNA with the DNA of gorillas, mice, chickens, and frogs reveal that humans

have the fewest DNA differences with…

trilobite

PA’s State Fossil

Hawks use their sharp claws to catch rodents for food. What

could happen to a hawk that was born with smaller claws?

~They could have fewer offspring than other hawks.

A volcanic eruption would most likely cause a population of turtles to

become…

EXTINCT

Scientists can produce less-aggressive foxes by….

• Choosing less-aggressive foxes to have offspring.

Which group has been separated from the human line of evolution from the longest period of time?

GIBBONS

Adjustment of an organism to its

environment

Lake Lizard

Desert Lizard

FEET COLOR

Resistant bacteria to antibiotics

1. Some bacteria is resistant2. That bacteria reproduces.3. Those non-resistants died

out.4. All that’s left are the resistant

bacteria.

Did humans evolve from present day monkeys?

NO, we just share their

DNA.

~First animal?

Answer: Jellyfish

~First land animal?

Answer: millipede

Darwin’s ship that traveled to the Galapagos Islands…?