evidences
This is used to determine the relative age of the fossils.
What is depth of the rock layer?
The theory of natural selection was developed by him.
Who is Charles Darwin
A characteristic that allows an organism to survive and reproduce in its environment is called.
What is an adaptation?
The amount of variation of species in a given area.
What is biodiversity?
Different beaks on birds results from different.....
What is food sources
The most modern and accurate way to determine evolutionary relationships.
What is DNA
These are the islands where Darwin developed his theory.
What are the Galapagos islands
Part of an organisms physical make-up that improves it's chance of survival.
What is a structural adaptation?
Change in the characteristics of a population of species over several generations.
What is evolution?
Can be beneficial, harmful or neutral.
What is a mutation?
When many of the genes of 2 different organisms are the same is evidence of this.
What is evidence of a common ancestor
The best adapted and able to survive and reproduce.
What is the "fittest" organism.
A behavior that an organism has that improves it's chance of survival.
What is a behavioral adaptation?
A group of organisms that ARE able to reproduce with one another.
What is species?
Natural selection acts on ________ over time
What are individuals?
This type of structure shows a common ancestor but not a shared function
What is homologous structure
When a trait gets passed on from generation to generation is when nature does this to the variation?
What is when nature "selects" a variation. (Natural Selection)
These are the two ways that could lead to a species evolving over time.
What is "geographic isolation" and mutations"?
A random change in genetic material.
What is a mutation?
When organisms are very close together on a tree of life or cladogram it tells us this about them.
What is that the organisms are very closely related.
An animal from which 2 or more species evolved.
What is a common ancestor?
The change in frequencies of populations.
What is evolution?
When populations of the same organisms are separated from reproducing with those of the same species.
What is geographic isolation?
When the environment removes organisms that aren't fit or keeps those that are and allows them to pass their desirable traits to the next generation.
What is selective pressure?
A high level of this causes species to have a greater chance of survival in the event of ecological disturbances.
What is a high level of biodiversity?