Causes of Microevolution
Evolutionary change within a species or small group of organisms, especially over a short time period.
What is microevolution?
The 2-allele combination that codes for a particular trait (ex. Bb, bb)
What is genotype?
The basic requirement of natural selection.
What is genetic variation?
Term describing when a species no longer exists on Earth.
What is extinction?
Genetic exchange due to migration of individuals between populations.
What is gene flow?
Traits that are visible and observable.
What is phenotype?
Organisms select mates based on a variety of different factors.
What is non-random mating?
Given 10 gametes, 3 have the dominant allele. The recessive allele frequency is...
What is 0.7?
A random change in DNA within an organism.
What is mutation?
A theoretical state in which a population's gene pool remains constant.
What is Hardy-Weinberg Equilibrium?
Bell curve change where the middle phenotype becomes even more predominant in the population.
What is stabilizing selection?
The number of times an allele occurs in a gene pool, compared to the total number of alleles in that pool for the same gene.
What is allele frequency?
Genetic drift due to drastic population size reduction from natural disaster.
What is the bottleneck effect?
A random change in a genetic code.
What is a mutation?
The advantage of sexual reproduction, even though it is less efficient than asexual reproduction.
What is variation or diversity in a population?
The fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group.
What is a transitional form?
Genetic drift due to colonization of isolated areas by a few individuals.
What is the founder effect?
Process by which a single species evolves into several different species that live in different ways.
What is adaptive radiation?
Bell curve where one of the extremes is favored over the mean or the other extreme.
What is directional selection?
A diagram that shows evolutionary relationships among organisms.
What is a phylogenetic or branching tree or cladogram?