Evolution and Speciation
The process through which genetic material physically move in and out of populations
What is gene flow?
A common ancestor and all of its descendents
What is a clade?
Resources and conditions necessary for the survival of a species
What is a niche?
+/+ relationship
What is mutualism?
Areas with high biodiversity that are in danger of losing it.
What are biodiversity hotspots?
Selection represented by a graph with 2 humps and a dip in the middle
What is disruptive selection?
The hierarchy of classifications in taxonomy
What is Kingdom, Phylum, Class, Order, Family, Genus, Species?
The maximum number of a species that the environment can support
What is the carrying capacity?
The concept that two species cannot exist in the same niche
What is competitive exclusion?
The process through which contaminants are more concentrated as you move up trophic levels
What is biomagnification?
A type of reproductive isolation including behavioral isolation
What is prezygotic isolation?
The term for traits evolving the fewest number of times possible
What is parsimony?
The life strategy associated with weeds – fast reproduction and early maturity
What is ruderal?
The establishment of a community after some sort of disturbance
What is secondary succession?
The process through which changes in the density of one species can affect the entire food web
What is trophic cascade?
The p2 in HW equation represents this
What is the homozygous dominant genotype?
The short-term, physiological reason for behavior
What is proximate cause?
Species with overlapping niches specializing on specific parts of the niche
What is resource partitioning?
Competition in which one organism uses all of the resources
What is exploitation competition?
How much “stuff” is created in a certain amount of time
What is productivity?
Speciation produced by physical separation
Allopatric speciation?
Genus species
What are species names?
dN/dt = rN(K-N)/K
What is the equation for logistic population growth?
Diversity of a single sample
What is alpha diversity?
Diversity vs function in which a loss of a few specific species leads to a significant drop in ecosystem function
What is the Keystone hypothesis?