Evolution Flashcards
Overproduction
More offspring are created than can survive
Natural selection
Mechanism for descent with modification
Genetic Variation
Within a population individuals often have different traits
Struggle to Survive
Individuals must compete with each other to survive
Differential Reproduction
Organisms with adaptations are more likely to survive and reproduce
Four categories for Evidence of Evolution
Paleontology
Molecular Biology
Embryology
Anatomy
Homologous Structure
Anatomical structures that occur in different species that come from a common ancestor
Analogous Structure
Closely related functions but different structures and no common ancestor
Molecular Evidence
Study of DNA, RNA, and proteins, the more identical the more closely related
Convergent evolution
The process by which different species evolve different traits
Divergent Evolution
The descendants of a single ancestor diversify into species that each fit different parts of the environment
Adaptive Radiation
When a divergent evolution occurs so a population fills many parts of the environment
Coevolution
When different species adapt in response to each others influence
Gene Pool
Used to describe the total genetic information available in a population
Allele Frequency
Number of a certain allele
Total number of alleles of all types
