What type of selection is graph one?
What type of selection is graph 2?
What type of selection is the last graph?
Antibiotic resistance is an example of directional selection
Stabilizing selection _______________ the mean trait value and reduces variation in the trait.
increases
maintains
reduces
selection maintains the meant trait value and the variation in the trait.
Disruptive selection occurs when the tails of the distribution are not favored over the intermediate phenotypes.
What type of selection is this?
Genetic drift, gene flow, and mutation pressures are other ways in which evolution may occur.
Genetic drift, gene flow, and mutation pressures only enhance selection.
Genetic drift isn't Darwinian evolution, correct?
correct
incorrect
A fixed allele, with a frequency of 1, is the only allele in that population.
Label the Y axis
Why type of evolution can get a population from point X to point Y?
Immigration is always good.
Horizontal gene transfer is when genes from one species are introduced into another organism compared to vertical (parent to offspring) transmission.
Horizontal gene transfer....
allows for rapid acquisition of traits
more common among eukarya
more common among bacteria
slows down the acquisition of traits
Modern demonstrated that selection operating on Mendelian variation could lead to rates of evolutionary changes that explain historical patterns of evolution.
What equation allows evolution to be documented and qualified?
Hardy-Weinberg Theroem serves as a null hypothesis for whether evolution is occurring in a population. It assumes...
small population
large population
random mating
every genotype has the same probability of mating
immigration
no immigration
emigration
no emigration
equal fitness
mutations
HW assumptions are important because any is a way that can occur.
If a difference of frequency is found between the actual and expected alleles/genotypes, then evolution has occurred/
You should practice the math questions at the end of this powerpoint.
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