Introduction to Evolution
Speciation
Evolution & Hardy Weinberg
Terms
RANDOM
100
What level does evolution occur at?
POPULATION
100
What is the term for when the offspring of 2 different species is unable to survive long enough for reproduction?
HYBRID INVIABILITY
100
What mode of selection takes place when the average is selected against?
DISRUPTIVE SELECTION
100
__________: random change in allele frequency
GENETIC DRIFT
100
Geographical isolation is (extrinsic/intrinsic)
EXTRINSIC
200
What is the term for the slow gradual changes in the Earth's surface?
UNIFORMITARIANISM
200
A nocturnal species and a diurnal species would likely encounter what form of reproductive isolation?
TEMPORAL ISOLATION
200
What are the 2 things that genetic drift can result in?
(1) BOTTLENECK EFFECT (2) FOUNDERS EFFECT
200
What is the term for when you identify a species based on what it looks like?
MORPHOSPECIES
200
What is key to the biological species concept?
REPRODUCTIVE ISOLATION
300
What were the 3 broad observations in The Origin of Species?
(1) THE UNITY OF LIFE (2) THE DIVERSITY OF LIFE (3) THE MATCH BETWEEN ORGANISMS AND THEIR ENVIRONMENT
300
Polyploidy can often lead to what type of speciation?
SYMPATRIC SPECIATION
300
What mechanism of evolution is mainly neutral or harmful?
MUTATION
300
__________: Each population that is right beside each other can reproduce to form successful offspring
RING SPECIES
300
(Genetic Drift/Gene Flow) has directionality.
GENE FLOW
400
Who was the first scientist to come up with a cohesive idea about why evolution works?
JEAN BAPTISTE LAMARCK
400
Allopatric speciation meets which of the Hardy Weinberg requirements?
NO GENE FLOW
400
Write out the formula that would be used to calculate the frequency of homozygous recessive individuals in a population.
p^2 + 2pq + q^2 = 1 (or q^2)
400
____________: used to determine the chance of one offspring having a certain genotype OR to determine the chance of all offspring produced having certain genotype
Punnett Square
400
What effect does natural selection have on variable traits?
NATURAL SELECTION INCREASES OR DECREASES VARIABLE TRAITS BUT DOES NOT PRODUCE VARIATION
500
Different eye colors between humans is an example of which of Darwin's observations?
GENETIC VARIABILITY
500
List 5 forms of reproductive isolation. (there are 8 that we learned total)
(1) ECOLOGICAL (2) TEMPORAL (3) BEHAVIORAL (4) MECHANICAL (5) GAMETIC (6) HYBRID INVIABILITY (7) HYBRID INFERTILITY (8) HYBRID BREAKDOWN
500
What are the 5 Hardy Weinberg requirements?
(1) NO MUTATIONS (2) NO NATURAL SELECTION (3) NO GENE FLOW (4) LARGE POPULATIONS (5) RANDOM MATING
500
__________: bout of unusually rapid evolutionary diversification in which natural selection accelerates the rates of both speciation and adaptation
ADAPTIVE RADIATION
500
List the 4 things (from lecture) that accounts for the genetic diversity seen in most populations.
(1) CROSSING OVER (2) MUTATIONS (3) RANDOM ASSORTMENT (4) RANDOM FERTALIZATION
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