EVOLUTIONARY ECOLOGY Flashcards
a tool that provides a visual summary of a complex set of scientific data, linking taxonomy with evolutionary relationships
evolutionary trees
line of descent from a common ancestor
evolutionary lineage
places where two groups diverge at a branch point
node
anatomical features that group of organisms have in common
shared characteristics
population of a species is separated into two areas by:
geography
clomate
conditions that exert natural selection on an organism at its particular stage in life
Selection pressures
More likely to survive
Greater fitness
More likely to survive
Greater fitness
More likely to die
Lower fitness
Process that produce new species
Speciation
Two different populations of the same species that interbreeds but display different phenotypes
Race
Populations are unable to interbreed can lead to separate species
Reproductive isolation
Conditions that prevent two organisms to breed
Reproductive barriers
Pre-mating barriers
Geographical
Temporal
Mechanical
Behavioral
Post mating barriers
Hybrid inviability
Hybrid sterility
Early living thing is a modification of the genetic info inherited from parents
Descent with modification
Species have branched or radiated into numerous lineages each with many species
Adaptive radiations
Physical evidences of organisms that lived in the past
Fossils
Evidence of an organisms’ activity like footprints
Trace fossils
Extermination of a species
Extinction
Death of all individuals
Mass extinction
When a species died out in a region but not globally
Local extinction
