Show:
Evolution
Natural Selection
Evidence for evolution
Gr8 Facts
Vocabulary
100
What is evolution
Evolution is a series of changes over a long period of time.
100
In order for natural selection to occur what has to happen?
Answer can include ; overproduction, variation, competition or speciation.
100
How is DNA used as evidence for evolution?
When comparing DNA one is using comparative biochemistry and can prove that two organisms have a common ancestor.
100
What does the saying "survival of the fittest mean"?
Survival of the fittest- organisms that are better adapted to their environment and able to reproduce successfully are considered “fit”
100
Define Biodiversity
Biodiversity in a species is the ability to have many variations intuit population which result from mutations.
200
what is selective breeding?
the mating of two animals in attempt t produce offspring with desirable characteristics or for the eliminations of a trait.
200
Darwin concluded that the mechanism for evolution is this..
natural selection
200
What is it when many species have similar body structures.
Homologous Structures
200
what is speciation?
Speciation- the creation of distinct species from a common ancestor.
200
Define overproduction.
Overproduction- more offspring are born in each generation than can possibly survive.
300
How is selective breeding similar to natural selection?
Certain traits are beneficial and are selected, These traits appear more often in the population.
300
Free points just because.... you're welcome
I'm great
300
Describe comparative embryology.
Comparative embryology- developing embryos of organisms that are quite different in mature form often show similar structures in early stages.
300
Describe comparative anatomy,
Comparative anatomy- comparing two organisms physical appearance or traits for a common ancestor.
300
Define competition.
Competition- organisms battle for shelter, food or the right to mate.
400
Species that share more similarities in their DNA are ______ than those that share fewer similarities
"more closely related to each other"
400
What is natural selection?
process in which organisms better adapted to their environment tend to survive and reproduce.
400
Describe comparative biochemistry
Comparative biochemistry- comparing two organisms DNA, enzymes, hormones and blood for common ancestry.
400
What is Gradualism?
Gradualism- is the idea that says changes occur slowly.
400
Who was Charles Darwin?
Charles Darwin founded the theory of natural selection.
500
List four ways to prove "common ancestry"
common anatomy common cytology common biochemistry common embryology
500
What is adaptation?
a change or the process of change by which an organism or species becomes better suited to its environment.
500
Describe comparative cytology
Comparative cytology- comparing two organisms cell structure and organelles to prove common ancestry.
500
What is punctuated equilibrium?
Punctuated equilibrium - says evolution happens in quick spurts.
500
Define Phylogenetic Tree.
Phylogenetic tree- is a branched diagram showing the evolutionary history of a species.