Evolution 1
Evidence
Selection
Evidence 2
Evolution 2
100
A change in the DNA sequence
What is a mutation?
100
Type of evidence where paleontologist will examine organisms within the law of superposition
What is fossils evidence
100
Natural selection acts directly on phenotype or genotype?
phenotype
100
When organisms have similar functions but not structures and no common ancestor. ex birds and butterflies
Analogous structures
100
The concept that organisms that are best suited to their environment will survive and reproduce
What is natural selection?
200
A heritable trait that helps an organism better survive and reproduce in their environment
What is an adaptation?
200
Has similar bone structures and a common ancestor
What are homologous structures?
200
When an organism chooses a mate based on exaggerated phenotype
Sexual Selection or Non-Random Mating
200
Closely related organisms look very different because of varying habitats
divergent evolution
200
The process where organisms that are not closely related develop similar traits as adaptations to similar environments
Convergent Evolution
300
When two or more organisms evolve adaptations in response to changes within the other.
example: bees attraction to purple flowered plants
coevolution
300
Type of evidence where we compare early development of different organisms
Embryology. All look the same - common ancestor
300
separation of a population so that they cannot interbreed or produce fertile offspring
reproductive isolation
300
A whale's pelvis or your tailbone are examples of ...
vestigial structures
300
How well an organism is able to survive and reproduce in its environment
What is fitness?
400
This person wrote On the Origin of Species
Who is Charles Darwin?
400
How can DNA be used as evidence for evolution?
Compare amino acid sequences - the more similar the more closely related they are.
400
A decrease in the Allele frequency due to random chance. ex: bottle neck affect, founder affect
Genetic Drift
400
Name 2 of the reasons why evolution is important to understand
Disease - resistant bacteria
Food - resistant pests
Species extinction
400
The expression of an organism's genes (observable characteristics)
What is phenotype?
500
Name the 4 things that need to be present for evolution by natural selection to occur
Overpopulation
Variation
Adaptation
Decent with modification/ selection
500
Type of Evidence that looks at where organisms lived throughout history (even during Pangea)
Biogeograpgy
500
The movement of Alleles from one population to another usually due to migration
Gene Flow
500
Process of forming a new species
ex. finches from south America now on the Galapagos that changed genetically
Speciation
500
The branching out of many organisms from a common ancestor into different environments. Often synonymous with Divergent Evolution
What is Adaptive Radiation