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Evolution Vocabulary
Vacabulary on the Evolution TEST
24
Biology
10th Grade
03/16/2009

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Term
Theory of biogenesis
Definition
states that only living organisms can produce other living organisms
Term

Artificial Selection

Definition
Darwin's terms for the selective breeding of organisms selected for certin traits in order to produce offspring having those traits
Term
Natural Selection
Definition
Theory of evolution developed by Darwin, based on four ideas: excess reproduction, inheritance, variations, and the advantages of specific traits in an enviorment
Term
Evolution
Definition
Hereditary changes in groups of living organisma over time
Term
Divergent Evolution
Definition
A type of evolution where RELATED populations become increasingly DISSIMILAR usually because of different habits,ultimately resulting in a new species 
Term
Homologous Structure
Definition
Anatomically similr structure inherited from a common ancestor
Term
Population
Definition
Group of organisms of the same species that occupy the same geographic place at the same time
Term

Embryo

Definition
Organism's early prebirth stage of development
Term
Phylogeny
Definition
Evolutionary history of a species
Term
Geographic Isolation
Definition
The physical seperation of members of a population when their habitat becomes divided
Term
Biogeography
Definition
Study of the distribution of plants and animals on Earth
Term
Genetic Diversity
Definition
Varietyof inheritable caracteristics or genes in an interbreeding population
Term
Gene Pool
Definition
Total number of genes in an interbreeding population
Term
Convergent Evolution
Definition
A type of evolution where UNRELATED populations become increasingly SIMILAR due to the enviorment selecting advantageous traits
Term
Endosymbiont Theory
Definition
Explains that eukaryotic cells mayhave evolved from prokaryotic cells
Term
Fossil
Definition
Preserved evidence of anorganism,often found in sedimentary rock, that provided evidence of the past life
Term
Speciation
Definition
The process of forming a species resulting in many selected populations of organisms
Term
Extinct
Definition
When a species disappears and ultimately dies out
Term
Mutation
Definition
Permanent change ina cell's DNA, ranging from changes in a single base pair to deletions of large sections of chromosomes
Term
Analogous Structures
Definition
Structure that has the same function but different construction and was not inherited from a common ancestor
Term
Vestigial Structures
Definition
Reduced form of a functional structure that indicates shared ancestry
Term
Genetic Drift
Definition

Random change in allelic frequencies in a population

Term
Morphology
Definition
The internal and external structure and appearance of an organism
Term

Fitness

Definition
Measure of a trait's relative contributions to the following generation
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