Pop-G and Speciation 1
This occurs over geologic time above the level of the species.
What is macroevolution?
This is prevented by having a large population and is a random change in allele frequencies.
What is genetic drift?
Three ways natural selection can affect polygenic traits.
What are stabilizing selection, directional selection, and disruptive selection?
This creates new alleles and all genetic variation within a population.
What is mutation?
This is all the genes of all members of a population.
What is a gene pool?
This is when two or more species are in a biological relationship and both evolve together in response to natural selection.
What is coevolution?
This term refers to the numbers of offspring that survive into the next generation.
What is fitness?
This occurs over a relatively short period of time within a population.
What is microevolution?
This is a condition where genetic drift occurs wherein a small number of individuals start a new population.
What is the founder effect?
The difference between phenotypes between males and females is known as this.
What is sexual dimorphism?
A model of evolution where the rate of evolution is generally slow but also experiences brief bursts of rapid change is known as this.
What is graduated equilibrium?
This type of speciation occurs when 2 or more populations of a species are geographically isolated.
What is allopatric speciation?
This type of speciation occurs within the same geographic area.
What is sympatric speciation?
This is a group of organisms that can breed and produce fertile offspring together.
What is a species?
This is movement in and out of a population.
What is migration?
A population that is large and experiencing: no mutation, no migration, random mating, and no natural selection is said to be in this condition.
What is Hardy-Weinberg equilibrium?
This is how often an allele occurs in a gene pool relative to other alleles for that gene.
What is allele frequency?
This is a condition where genetic drift happens wherein the population suddenly gets smaller.
What is a bottleneck effect?
This is a version of a gene.
What is an allele?
The process in which a new species comes to be from a progenitor species is known as this.
What is speciation?
This type of natural selection occurs when the extreme phenotypes of a polygenic trait are selected against.
What is stabilizing selection?
A model of evolution where the rate of evolution is a slow, steady, incremental process is known as this.
What is gradualism?
This type of natural selection occurs when one of the two extreme phenotypes of a polygenic trait are selected for.
What is directional selection?
This type of natural selection occurs when the middle range of phenotypes of a polygenic trait are selected against.
What is disruptive selection?
This occurs when individuals move in and out of a population.
What is gene flow?