Evidence of Evolution
Natural Selection
Mechanisms
More Evidences
Other
100
Scientist use these remains of ancient organisms to prove common ancestry.
What are fossils?
100
Term used to describe the ability of an organism to survive and reproduce.
What is fitness?
100
Seen in small populations, random change in allele frequency of a population.
Genetic Drift
100
Body parts that appear to have no current function, but are remnants of our evolutionary past.
Vestigial structures
100
The process when new species form.
Speciation
200
Organisms with few variations in a changing environment are in danger of this.
What is extinction?
200
Studied the finches of the Galapagos Islands and coined the term "survival of the fittest".
Who is Charles Darwin?
200
Type of genetic drift when a small population is started on an island, leads to decrease in genetic variation.
What is founder effect?
200
Structures are similar physical features in organisms that share a common ancestor but have different functions.
Homologous structures
200
Diversifying Selection
300
Looking at the amino acids, which two species have a more recent common ancestor?
Human and Chimpanzee
300
Come from mutations and recombination in DNA.
What is variation?
300
New alleles are introduced to an existing population, increases genetic variation.
What is gene flow?
300
Which is the most recent fossil that would have the most complex organisms?
A
300
Stabilizing Selection
400
Scientist use embryology that shows embryos of different species often share similar features during early stages of development to prove what?
What is common ancestors?
400
Theory that explains how traits in a population are chosen to be advantageous in an environment.
What is Natural selection?
400
Mechanism of evolution that organisms choose their mate depending on certain characteristic such as color or lighting pattern.
What is non random mating?
400
is a process of gradual change that takes place over many generations, during which species of animals, plants, or insects slowly change some of their physical characteristics.
gradualism or graduated equilibrium
400
Directional Selection
500
The scientific study of the geographic distribution of organisms across the Earth that scientist use to show common ancestry.
What is Biogeography?
500
4 Principals of Natural Selection.
Variation, Adaptation, Overproduction, Descent with modification.
500
Northern elephant seals have reduced genetic variation because of humans hunting them have reduced their population size to as few as 20 individuals at the end of the 19th century.
Bottleneck Event
500
Physical changes across species tend not to occur gradually but instead present themselves in brief punctuated events bookended by long periods of evolutionary stability or stasis.
Punctuated Equilibrium
500
List 3 types of evidence that Scientist use to prove common ancestry.
Fossils
Homologous Structures
Embryology
Vestigial Structures
Biochem/Molecular similarities
Biogeography