History of Evolutionary Theory
This scientist proposed natural selection as the mechanism of evolution.
Who is Charles Darwin?
This is a segment of DNA that codes for a single trait.
What is a gene?
This term describes all the alleles present in a population.
What is a gene pool?
This occurs when Hardy-Weinberg conditions are not met.
What is evolution?
This is the formation of new species.
What is speciation?
This missing concept limited Darwin’s original theory.
What is the mechanism of inheritance OR the genetics of inheritance?
These are alternative forms of a gene.
What are alleles?
This term refers to how often a specific allele appears in a population.
What is allele frequency?
This mechanism of evolution consistently improves adaptation to the environment.
Natural selection
This type of isolation occurs when populations are physically separated.
What is geographic isolation?
This scientist discovered the basic principles of inheritance using pea plants.
Who is Gregor Mendel?
These are the three main sources of genetic variation in populations.
What are mutation, gene flow, and sexual reproduction (crossing over & independent assortment included)?
These must change in order for evolution to occur.
What are allele frequencies?
This condition describes a population where allele frequencies do not change.
What is genetic equilibrium?
This type of selection favors both extreme phenotypes over intermediate ones.
What is disruptive selection?
These scientists taught Darwin that the Earth was much older due to the law of superposition and the idea that there was gradual change over time (repeating itself).
Hutton and Lyell
The formula for the frequency of alleles.
What is p + q = 1.
This is the recessive allele frequency when 9 out of 20 individuals have the recessive trait.
What is 0.67 or 67%?
These are the five agents that can cause changes in allele frequencies.
What are mutation, gene flow, genetic drift, nonrandom mating, and natural selection?
This type of speciation occurs due to geographic barriers.
What is allopatric speciation?
This field combines Mendelian genetics with Darwinian evolution (it is the title of one of your note sheets).
What is population genetics?
This is the approximate number of different gametes humans can produce from independent assortment alone. (you figured this out in your POGIL on meiosis)
What is about 8.4 million?
These tend to remain constant even when phenotypic ratios change (in stable populations).
What are allele frequencies?
Calculate the percent of heterozygous individuals in a population that has 110 white recessive bunnies and 600 brown dominant bunnies. SHOW YOUR WORK.
2pq = .48 or 48%
This type of reproductive barrier prevents fertilization from occurring.
What is prezygotic isolation?