cospeciation
Host-parasite joint branching
Cospeciation is the simultaneous speciation of two organisms that depend on each other, such as a parasite and its host.
When the host species diverges into two, the parasite often does as well, producing parallel evolutionary trees: The matching family trees of lice and their primate hosts suggest ancient cospeciation.
phylogenetics
Evolutionary relationships among organisms
- congruenceState of agreement
- cladisticsClassification by common descent
- mirroringReproducing an image identically
- shared ancestryHaving the same forebears
symbiosis
Two-way biological benefit
- gut microbiomeMicrobial community in digestive tract
- lichenSymbiotic rock dweller
- nitrogen fixationConverting inert gas to ammonia
- mitochondriaCell's energy-producing organelles
host-parasite
Burrowing rodent with cheek pouches
- pinwormIntestinal nematode parasite
- nematodeThreadlike parasitic worm
- tapewormSegmented intestinal parasite
- obligate parasiteOrganism requiring host survival
phylogeny
Evolutionary relationships among organisms
- congruenceState of agreement
- cladisticsClassification by common descent
- mirroringReproducing an image identically
shared ancestry · comparative analysis · evolutionary history
mutualism
Two-way biological benefit
- gut microbiomeMicrobial community in digestive tract
- lichenSymbiotic rock dweller
- nitrogen fixationConverting inert gas to ammonia
pocket gopher
Burrowing rodent with cheek pouches
- coevolutioncoevolution, arms race, Red Queen hypothesis, predator-prey, mutualism
- speciationchromosome doubling
species, specialize, specialized, specializes, specializing, speciation