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Yoder evoltuion Section
Yoder evolution section LAmar University Biology 1406
25
Biology
Undergraduate 1
04/14/2013

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Term
Mineralized remnants of formerly living organisms
Definition
Fossils
Term
Abundance of each version of a gene in a population(2wds).
Definition
Allele Frequency
Term
What occurs when no evolution is happening in a population
Definition
Genetic Equilibrium
Term
Behavioral, mechanical and ecological isolation are all types of what?
Definition
Prezygotic reproductive isolation
Term
Occurs when natural selection favors one extreme of a variable trait.
Definition
Directional Selection
Term
What is one type of Absolute dating of fossils?
Definition
Radiometric Dating(ex C14)
Term
Selection that favors the extremes.
Definition
Diversifying
Term
Large scale evolutionary changes leading to higher taxonomic divergence.
Definition
Macroevolution
Term
Need not have the same function but indicate evolutionary relationships
Definition
Homologous structures
Term
An example of post-zygotic reproductive isolation
Definition
Sterility in hybrids
Term
Type of selection that favors intermediate forms.
Definition
Stabilizing
Term
An example of temporal isolation
Definition
Reproductive isolation as a result of sexual maturation at different times
Term
Refers to speciation events happening rapidly between long periods of stasis
Definition
Punctuated equilibrium
Term
Genetic change over time.
Definition
Evolution
Term
What is the Hardy - Weinberg Equation?
Definition
p2 + 2pq + p2 = 1
Term
When a new species branches off of an existing one.
Definition
Cladogenesis
Term
What type of speciation occurs within the range of the ancestral population without a physical barrier?
Definition
Sympatric
Term
Shifts in allele frequencies due to random events.
Definition
Genetic Drift
Term
Explosions of speciation events from a single ancestor(2wds)
Definition
Adaptive Radiation
Term
Person primarily responsible for the idea of natural selection.
Definition
Darwin
Term
He thought that individual organisms changed physically and some how passed those traits to the next generation.
Definition
Lamarck
Term
Evolutionary remnants of former functional structures(ie. pelvic girder of snakes)
Definition
Vestigial Structures
Term
Flow of alleles in and out of a population by immigration / emigration
Definition
Gene Flow
Term
Darwin made a 5 year voyage on the __________________
Definition
H.M.S. Beagle
(a ship)
Term
Favors traits only on their adaptive value in mate choice.
Definition
Sexual Selection
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