Evolving Interactions Between Species

Question 1

When does co-evolution occur?

Answer 1

…occurs when actions of one (or a group) of species put
selective pressure on another (or group of) interacting species. In this
type of selection, an adaptation(s) of one species may lead to a
subsequent adaptation(s) of the second species, which in turn leads to a
further adaptation(s) in the first species, and so on

Question 2

Reciprocal selection

Answer 2

higher fitness of both species
correlated with higher interaction
between them

Question 3

specific coevolution

Answer 3

trait values decrease/increase/change over time to attempt to outcompete the other at all times

one effects one other species

Question 4

diffuse coevolution

Answer 4

changes in prey/host species and predator/parasite occurs through multiple indvidiauls, not just 1v1

Question 5

Escape and radiate coevolution

Answer 5

prey/host faces diversification in many traits during one predator/parasite, then repeats to do this again

Question 6

Name the three levels of interspecific co-evolution

Answer 6

these are adaptations; predation/parasitism, competition, and mutalism

Question 7

Name the 2 levels of intraspecific co-evolution

Answer 7

these are genome sigs of natural selection; intra-molecular coevolution, intergenomic coevolution

Question 8

The Red Queen Hypothesis

Answer 8

Continuing adaptation needed for a species to maintain fitness amongst organisms it’s coevolving with in a changing environment

“A slow sort of country!” said the Queen. “Now, here, you see, it takes all the running you can do, to keep in the same place. If you want to get somewhere else, you must run at
least twice as fast as that!” Lewis Carroll, Alice in Wonderland