Evolution
Changes in traits over long periods of time
What is Evolution?
The survival and reproduction of the organisms that are genetically best fit for their environment
Natural Selection?
type of adaptation uses to survive and reproduce in its environment.
What is behavioral adaptation?
Convergent evolution
the process where unrelated species independently evolve similar traits or features due to similar environmental pressures
Mutations can be...
good, bad, or silent
A theory (explanation) supported by evidence for how populations change over time
What is evolution?
The variety of dog and cat breeds that we have today are a product of _________ _____________.
What is Artificial Breeding (Selective Breeding)
comparing physical features like color and size
What is evidence of evolution?
The first set of organisms that lived on Earth
What is Bacteria?
The name of the islands where Darwin studied and gathered his evidence on Natural Selection and finches
What are The Galapagos Islands?
What can cause populations to decrease in size?
Lack of food or increased predators
Evolution can only occur if this is involved
What is Genetic Variation?
the differences between organisms in a population
What is variation?
Two organisms share a large amount of similar DNA
What are siblings?
Pizzly bears parents
male polar, female grizzly
Two different organisms are alike, they share this in their bloodline
What is a Common Ancestor?
The venom of the black mamba snake is an example of a type of adaptaion
What is an example of Physiological Adaptation? Defense mechanism
What can cause a population to increase rapidly?
Easy abundant food, no predators
survival of the fittest
Natural Selection