Evolution (c) Co-Evolution Flashcards
Co-Evolution is…
The process by which two or more species evolve in response to selection pressures imposed by each other.
A change in the traits of one species acts as…
A selection pressure on the other species.
Co-evoltion is seen in pairs of species that have…
Symbiotic interactions
Types of symbiotic interactions are…
Mutualism, Commensalism, Parasitism
In mutualism..
Both organisms in the interaction are interdependent on each other for resources or other services. Both organisms gain from the relationship (+/+)
In Commensalism…
Only one organism benifits (+/0)
In parasitism…
The parasite benifits in terms of energy or nutreints and the host is harmed. (+/-)
The Red Queen Hypothesis states that…
In a co-evolutionary relationship, change in the traits of one species can act as a selection pressure on the other species. This means that species in these relationships must adapt to avoid extinction.
