Road to Evolution
The gradual change in a population's hertiable traits
What is Evolution?
What is an adaptation?
This is the change in frequency of a gene variant due to random chance.
What is genetic drift?
The process by which new species are created through evolution
What is speciation?
This is a type of speciation driven by geological isolation
What is allopatric speciation?
This is the theory that geological changes result from continuous processes which are still occurring.
What is uniformitarianism?
The smallest unit that can evolve.
What is a population?
This can occur when a population size is reduced for at least one generation.
What is the bottleneck effect?
This is the rapid evolution of many new species that possess adaptations for previously empty niches.
What is adaptive radiation?
This is the type of speciation that arises when populations continue to live together.
What is sympatric speciation.
This is Lamarck's theory that traits acquired will pass to individual's offspring.
What is inheritance of acquired characteristics.
This selection pressure is caused by mate choice.
What is sexual selection?
This is the movement of genetic material between two populations of the same species.
What is gene flow?
This is a connected series of neighboring populations whose end populations are too distantly related to interbreed.
What is a ring series?
This is the location where finches were studied in the 70s by the Grants and found to be evolving due to allopatric speciation.
What is Daphne Major island?
These individuals described the mechanism of natural selection.
Who are Darwin and Wallace?
The process by which organisms who are most suited to the environment will survive and reproduce.
What is natural selection?
This occurs when few individuals from a population colonize a new area and reduces genetic variation.
What is the founder effect?
These prevent members of different species from mating.
What are prezygotic barriers?
This involves possessing more than 2 complete sets of chromosomes due to an error in mitosis or meiosis
What is polyploidy?
This is the theory that all species share a CA and all species have unique heritable differences from the CA.
What is Darwinism?
These are the three types of natural selection.
What are directional, diversifying/disruptive, and stabilizing selection
This is what causes humans to be resistant to strains of malaria and HIV.
What is a beneficial mutation?
These are the three types of hybrid reconnection.
What are reinforcement, fusion, and stability.
This is gene flow between populations being cut off
What is genetic isolation?