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eco2

guh

TermDefinition
Directional selection When evolution is driving an animal a specific way. Ex- Bacteria who are more resistant to medicine survive and breed more resistant offspring
Stabilizing selection When the extremes of a trait to worse than the middle ground. Ex- Babies who are too large or too small do worse than normal sized babies
Disruptive selection When the middle phenotype is at disadvantage and either side of the extreme does better. Ex- Finches with large beaks crack nuts well and finches with narrow beaks catch bugs well. Normal beaks do both tasks worse
Typological species When one species LOOKS different than the other species. Doesn't always mean they're actually different species
Biological species When one group is reproductively isolated from another group. AKA groups are so different they can't make babies with eachother. ex- cats and dogs
Ecological species When groups occupy different niches. Ex- nut eating finches vs bug eating finches
Cohesion species combo of ecological and biological. Ex- different breeds of dogs can mate and make offspring
Phylogenetic species When a group has a unique feature that no other group has
Random dispersion Rare. Ex- Wind dispersed seeds
Uniform dispersion Evenly spaced, often due to competition for resources
Clumped dispersion Most common. An uneven distribution of resources causes organisms to clump in one area
N population
M number of marked animals
C captured animals
R recaptured animals
C/R ratio of captures to recaptures
N/M ratio of total population to marked animals
Created by: user-1862257
 

 



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