Evolution
A permanent change in the DNA in a
given population over time
What is Evolution
Survival of the fittest means that an organism is more likely to ______ and ______.
survive & reproduce
These spiral shells are evidence of an ancient squid
Ammonites
A population whose members can interbreed and produce fertile offspring
species
The age of the Dinosaurs was also called this
Mesozoic
Father of Evolution
Charles Darwin
Another name for natural selection
What is survival of the fittest
Fossil footprints are an example of this kind of fossil
Trace fossil
When one species diverges into two separate species due to geographical barrier
What is allopatric speciation
The age of mammals is also called this
Cenozoic
This type of variation is needed for natural selection to occur
What is genetic
How long Darwin's voyage worldwide lasted on HMS Beagle
5 years
An ancient marine organism from Paleozoic related to the modern horseshoe crab.
trilobite
Birds of Paradise perform elaborate courtship dances to impress a mate. Other bird species cannot reproduce with the Bird of Paradise due to this type of barrier.
prezygotic barriers
When 50 percent or more of all species dies in a short time.
mass extinction
traits organisms have making them better suited to the environment increasing their chances for survival
adaptations
Draw the evolution steps from aquatic to terrestrial for 4 legged organisms.
Lungfish--> amphibian--> reptile on land with leathery egg
When a hybrid is infertile, this creates a _________barrier to speciation.
postzygotic
The age of ancient oceans is called this
Paleozoic
A random change in DNA of a species
What is mutation
A zonkey is an example of a ______- made from a zebra and a donkey species
hybrid
These organisms went extinct 2 million years ago- the largest cartilaginous fish
Megalodon sharks
Speciation of Galapagos Finches on islands occurred due to this type of isolation from mainland
Geographic
The reasons for the dinosaur extinction at 65 mil years
asteroid impact, volcanoes, climate change